Interactions on record — worth a quick check against your medications. Based on 6 of 7 ingredients. Check your meds →
Dietary supplement

Digestion Guard Non-Alcohol Ingredients & Drug Interactions

by Hawaii Pharm

Digestion Guard Non-Alcohol label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Digestion Guard Non-Alcohol against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Digestion Guard Non-Alcohol is a dietary supplement by Hawaii Pharm with 7 active ingredients. Its ingredients are commonly taken for blood sugar support, digestive upset, antioxidant support.Based on those ingredients, 1,179 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Turmeric Rhizome Extract, Dry, Raw, Peppermint Leaf Extract, Dry, Raw, Fennel Seed Extract, Dry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Digestion Guard Non-Alcohol by Hawaii Pharm

Ask about any prescription or over-the-counter medication and we check it for interactions with Digestion Guard Non-Alcohol by Hawaii Pharm — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Digestion Guard Non-Alcohol by Hawaii Pharm

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 7 active ingredients.
  • “Proprietary Extract Blend” is a proprietary blend — the label gives one combined amount (1,156 mg) without saying how much of each component you get.

Digestion Guard Non-Alcohol contains seven active ingredients. The first is a proprietary extract blend—the label doesn't break down what's inside it, so we list the six named extracts separately: cinnamon bark, fennel seed, peppermint leaf, turmeric rhizome, rosemary leaf, and dill seed, all in dry, raw form.

The seventh is psyllium husk extract, also dry and raw. Two inactive ingredients—glycerin and water—round out the formula.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Digestive health and digestive upset support.
  • We looked for evidence on: Abdominal pain, Colic, Constipation, Cough, Diarrhea, Dyspepsia — and 4 related terms.
  • The strongest evidence on file: Turmeric is rated "Possibly Effective" for Dyspepsia (Natural Medicines).
  • Also on file: Peppermint is rated "Possibly Effective" for Dyspepsia.
  • Also on file: Fennel is rated "Insufficient Reliable Evidence To Rate" for Constipation, Cough, Dyspepsia, Flatulence, and more.

The evidence for these ingredients is mixed. Peppermint is likely effective for irritable bowel syndrome (IBS) and possibly effective for indigestion and nausea.

Fennel is possibly effective for period pain (dysmenorrhea). Turmeric is possibly effective for depression, high cholesterol, and hay fever, plus indigestion.

Rosemary is possibly effective for memory. For the others—cinnamon, dill, and psyllium husk—the evidence we hold either isn't established or is insufficient to rate how well they work.

That doesn't mean they don't help; it means the research hasn't been thorough enough yet to say for sure.

The evidence, ingredient by ingredient Cassia Cinnamon Fennel Peppermint Turmeric Rosemary Dill

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 6 of the 6 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 6 of 6.
  • General safety write-ups exist for 6 of 6.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Peppermint and cinnamon are likely safe in pregnancy and lactation at food amounts, though high-dose supplements should be avoided. Turmeric is likely safe in pregnancy and lactation at food amounts, but one entry flags high-dose use as possibly unsafe in pregnancy—talk with your doctor about the dose you're taking.

Fennel, rosemary, and dill are possibly unsafe in pregnancy and should be avoided in medicinal amounts; breastfeeding safety data for fennel and dill is limited. Cinnamon contains coumarin, which can harm the liver in very high doses over long periods, though the doses in clinical trials (360 mg to 12 grams daily) did not cause measurable liver injury.

Peppermint and turmeric are generally well tolerated, though turmeric has been linked to at least 70 reports of liver damage when taken as a supplement for 2 weeks or longer—most cases resolved when the supplement was stopped. Common side effects include abdominal pain, heartburn, and nausea with peppermint; nausea and diarrhea with turmeric; and gastrointestinal discomfort with fennel.

Rare but serious effects reported include seizures with fennel and allergic reactions including anaphylaxis.

Side effects, ingredient by ingredient Cassia Cinnamon Fennel Peppermint Turmeric Rosemary Dill

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 6 of the 6 matched ingredients can interact with medications — Rosemary, Fennel, Dill, Turmeric, Peppermint, among others.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; cancer treatments; diabetes medications; lithium.
  • For scale: 1,180 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check with your pharmacist if you're on tacrolimus or other immunosuppressants (Moderate), tamoxifen or other cancer drugs (Moderate), blood thinners or antiplatelet drugs like warfarin or clopidogrel (Moderate), diabetes medications (Moderate), ciprofloxacin or other antibiotics (Moderate), aspirin or salicylate-containing pain relievers (Moderate), lithium (Moderate), or any drug metabolized by liver enzymes including felodipine, certain antidepressants, and pain medications (Moderate to Minor). These are the main medication types the ingredients interact with.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product may help with digestion and IBS symptoms, especially because of peppermint. But if you take any blood thinners, diabetes medications, cancer drugs, immunosuppressants, or drugs processed by your liver, you need to check with your pharmacist before starting—several ingredients can shift how your medications work.

If you're pregnant or breastfeeding, talk with your doctor first, particularly about the fennel, rosemary, and dill.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 6 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2025.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Digestion Guard Non-Alcohol, straight from the product label.

Brand Hawaii Pharm
Barcode (UPC) 840253669629
Net contents 4 Fluid Ounce(s); 120 Milliliter(s)
Market status On market
Date entered into DSLD Jun 25, 2025
DSLD ID 331853
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Digestion Guard Non-Alcohol by Hawaii Pharm, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
840253669629
IngredientAmount% DV
Proprietary Extract Blend1156 mg--
Cinnamon Bark Extract, Dry0 NP--
Fennel Seed Extract, Dry0 NP--
Peppermint Leaf Extract, Dry, Raw0 NP--
Turmeric Rhizome Extract, Dry, Raw0 NP--
Rosemary Leaf Extract, Dry, Raw0 NP--
Dill Seed Extract, Dry, Raw0 NP--
Psyllium Husk Extract, Dry, Raw0 NP--

Other ingredients: Glycerin, Water

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Hawaii Pharm Herbal Extract Highest Quality Since 2008

Suggested/Recommended/Usage/Directions

Suggested use: Shake well before using. For adults add about 20-30 drops (0.7-1 ml, one full squeeze of the dropper bulb) to some juice or water, up to 4 times a day.

Precautions

Warning: We recommend to seek expert medical advice before taking.

Do not use if you are allergic to any ingredients.

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications.

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications. Keep out of the reach of children!

May affect the ability to drive and operate machinery. May have contraindications, can cause side effects and adverse reactions. Do not use if seal is broken or missing.

Storage

Store in a cool dry place.

Seals/Symbols

cGMP Made in compliance with cGMP 21 CFR 111 in an FDA Registered and Inspected Facility.

USA Made in United States of America

FDA Disclaimer Statement

This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure or prevent any disease.

Formulation

Made in USA, Hawaii

C2H5OH Alcohol free All the raw materials are gluten-free by their nature No artificial colors, flavors, or preservatives

Only natural ingredients Identity and purity is laboratory verified

FDA Statement of Identity

Herbal Supplement

General Statements

Extraction rate: about 1/3-4 (up to 333 mg of dry raw material per 1 ml of extract).Scan this QR-code to get 15% discount on your next purchase limited time deal

Scan this QR code to get 15% discount on your next purchase Limited time deal

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Digestion Guard Non-Alcohol by Hawaii Pharm label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Digestion Guard Non-Alcohol label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Digestion Guard Non-Alcohol by Hawaii Pharm

These are the 7 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Other (inactive) ingredients: Glycerin, Water. These complete the product’s ingredient list but are not active constituents.

Interaction report

Digestion Guard Non-Alcohol by Hawaii Pharm Drug Interactions

Want to check YOUR meds against Digestion Guard Non-Alcohol?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
1,179Drugs
1,113 Moderate 66 Minor

Ingredients driving the most interactions

Turmeric Rhizome Extract, Dry, Raw 1,133
Peppermint Leaf Extract, Dry, Raw 796
Fennel Seed Extract, Dry 740
Cinnamon Bark Extract, Dry 442
Rosemary Leaf Extract, Dry, Raw 372

Individual Drug Interactions

The ingredients in Digestion Guard Non-Alcohol interact with 1,179 drugs. Click any drug to see the details.

6 of the 7 ingredients in Digestion Guard Non-Alcohol interact with drugs. Each result below shows which ingredient is responsible. Turmeric Rhizome Extract, Dry, Raw Peppermint Leaf Extract, Dry, Raw Fennel Seed Extract, Dry Cinnamon Bark Extract, Dry Rosemary Leaf Extract, Dry, Raw Dill Seed Extract, Dry, Raw

Each ingredient & the kinds of drugs it affects

For each ingredient in Digestion Guard Non-Alcohol with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Turmeric Rhizome Extract, Dry, Raw24 drug types · 1,133 drugs

Alkylating Agents

Turmeric has antioxidant effects. Theoretically, this may reduce the activity of chemotherapy drugs that generate free radicals. However, research is conflicting.
In vitro research suggests that curcumin, a constituent of turmeric, inhibits mechlorethamine-induced apoptosis of breast cancer cells by up to 70%. Also, animal research shows that curcumin inhibits cyclophosphamide-induced tumor regression. However, some in vitro research shows that curcumin does not affect the apoptosis capacity of etoposide. Also, other laboratory research suggests that curcumin might augment the cytotoxic effects of alkylating agents. Reasons for the discrepancies may relate to the dose of curcumin and the specific chemotherapeutic agent. Lower doses of curcumin might have antioxidant effects while higher doses might have pro-oxidant effects. More evidence is needed to determine what effect, if any, turmeric might have on alkylating agents.

Likelihood Possible Evidence D
Amlodipine (Norvasc)

Taking turmeric with amlodipine may increase levels of amlodipine.
Animal research shows that giving amlodipine 1 mg/kg as a single dose following the use of turmeric extract 200 mg/kg daily for 2 weeks increases the maximum concentration and area under the curve by 53% and 56%, respectively, when compared with amlodipine alone. Additional animal research shows that taking amlodipine 1 mg/kg with a curcumin 2 mg/kg pretreatment for 10 days increases the maximum concentration and area under the curve by about 2-fold when compared with amlodipine alone.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Turmeric may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs. However, research is conflicting.
Curcumin, a constituent of turmeric, has demonstrated antiplatelet effects in vitro. Furthermore, two case reports have found that taking turmeric along with warfarin or fluindione was associated with an increased international normalized ratio (INR). However, one clinical study in healthy volunteers shows that taking curcumin 500 mg daily for 3 weeks, alone or with aspirin 100 mg, does not increase antiplatelet effects or bleeding risk. It is possible that the dose of turmeric used in this study was too low to produce a notable effect.

Likelihood Possible Evidence B
Antidiabetes Drugs

Theoretically, taking turmeric with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research and case reports suggest that curcumin, a turmeric constituent, can reduce blood glucose levels in patients with diabetes. Furthermore, clinical research in adults with type 2 diabetes shows that taking curcumin 475 mg daily for 10 days prior to taking glyburide 5 mg decreased postprandial glucose levels for up to 24 hours when compared with glyburide alone, despite the lack of a significant pharmacokinetic interaction. Other clinical studies in patients with diabetes show that taking curcumin daily can reduce blood glucose levels when compared with placebo.

Likelihood Possible Evidence B
Antitumor Antibiotics

Turmeric has antioxidant effects. Theoretically, this may reduce the activity of chemotherapy drugs that generate free radicals. However, research is conflicting.
In vitro and animal research shows that curcumin, a constituent of turmeric, inhibits doxorubicin-induced apoptosis of breast cancer cells by up to 65%. However, curcumin does not seem to affect the apoptosis capacity of daunorubicin. In fact, some research shows that curcumin might augment the cytotoxic effects of antitumor antibiotics, increasing their effectiveness. Reasons for the discrepancies may relate to the dose of curcumin and the chemotherapeutic agent. Lower doses of curcumin might have antioxidant effects while higher doses might have pro-oxidant effects. More evidence is needed to determine what effects, if any, antioxidants such as turmeric have on antitumor antibiotics.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Turmeric might increase or decrease levels of drugs metabolized by CYP3A4.
In vitro and animal research show that turmeric and its constituents curcumin and curcuminoids inhibit CYP3A4. Also, 8 case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking turmeric and cancer medications that are CYP3A4 substrates, including everolimus, ruxolitinib, ibrutinib, and palbociclib, and bortezomib. In another case report, a transplant patient presented with acute nephrotoxicity and elevated tacrolimus levels after consuming turmeric powder at a dose of 15 or more spoonfuls daily for ten days prior. It was thought that turmeric increased levels of tacrolimus due to CYP3A4 inhibition.
Conversely, other in vitro research suggests that turmeric induces CYP3A4 activity, leading to reduced levels of CYP3A4 substrates. An animal model suggests that induction of CYP3A4 occurs after daily curcumin use for 1 week. However, the induction of CYP3A4 by turmeric has not been reported in humans.

Likelihood Possible Evidence D
Hepatotoxic Drugs

Theoretically, turmeric might increase the risk of liver damage when taken with hepatotoxic drugs.
There is concern that turmeric might cause hepatotoxicity, especially when highly bioavailable formulations are used in high doses.

Likelihood Possible Evidence D
Methotrexate (Trexall, Others)

Theoretically, turmeric might have additive effects when used with hepatotoxic drugs such as methotrexate.
In one case report, a 39-year-old female taking methotrexate, turmeric, and linseed oil developed hepatotoxicity.

Likelihood Possible Evidence D
Organic Anion-Transporting Polypeptide Substrates (Oatp)

Theoretically, turmeric might increase blood levels of OATP4C1 substrates.
In vitro research shows that the turmeric constituent curcumin competitively inhibits OATP4C1 transport. This transporter is expressed in the kidney and facilitates the renal excretion of certain drugs. Theoretically, taking turmeric might decrease renal excretion of OATP substrates.

Likelihood Possible Evidence D
Sulfasalazine (Azulfidine)

Turmeric might increase the effects and adverse effects of sulfasalazine.
Clinical research shows that taking the turmeric constituent, curcumin, can increase blood levels of sulfasalazine by 3.2-fold.

Likelihood Probable Evidence B
Tacrolimus (Prograf)

Turmeric might increase the effects and adverse effects of tacrolimus.
In one case report, a transplant patient presented with acute nephrotoxicity and elevated tacrolimus levels of 29 ng/mL. The patient previously had tacrolimus levels within the therapeutic range at 9.7 ng/mL. Ten days prior to presenting at the emergency room the patient started consumption of turmeric powder at a dose of 15 or more spoonfuls daily. It was thought that turmeric increased levels of tacrolimus due to cytochrome P450 3A4 (CYP3A4) inhibition. In vitro and animal research show that turmeric and its constituent curcumin inhibit CYP3A4.

Likelihood Possible Evidence D
Talinolol

Turmeric may reduce the absorption of talinolol in some situations.
Clinical research shows that taking curcumin for 6 days decreases the bioavailability of talinolol when taken together on the seventh day. The clinical significance of this effect is unclear.

Likelihood Probable Evidence B
Tamoxifen (Nolvadex)

Theoretically, turmeric might reduce the levels and clinical effects of tamoxifen.
In a small clinical trial in patients with breast cancer taking tamoxifen 20-30 mg daily, adding curcumin 1200 mg plus piperine 10 mg three times daily reduces the 24-hour area under the curve of tamoxifen and the active metabolite endoxifen by 12.8% and 12.4%, respectively, as well as the maximum concentrations of tamoxifen, when compared with tamoxifen alone. However, in the absence of piperine, the area under the curve for endoxifen and the maximum concentration of tamoxifen were not significantly reduced. Effects were most pronounced in patients who were extensive cytochrome P450 (CYP) 2D6 metabolizers.

Likelihood Possible Evidence B
Topoisomerase I Inhibitors

Turmeric has antioxidant effects. There is some concern that this may reduce the activity of chemotherapy drugs that generate free radicals. However, research is conflicting.
In vitro research shows that curcumin, a constituent of turmeric, inhibits camptothecin-induced apoptosis of breast cancer cells by up to 71%. However, other in vitro research shows that curcumin augments the cytotoxic effects of camptothecin. Reasons for the discrepancies may relate to the dose of curcumin and the chemotherapeutic agents. Lower doses of curcumin might have antioxidant effects while higher doses might have pro-oxidant effects. More evidence is needed to determine what effect, if any, turmeric might have.

Likelihood Possible Evidence D
Tramadol (Ultram)

Theoretically, turmeric might increase or decrease levels of tramadol.
Animal research suggests that a single dose of curcumin, a constituent of turmeric, may increase tramadol's maximum concentration (Cmax) by inhibiting metabolism, while continued daily use for 7 days may reduce the area under the curve (AUC) due to the induction of drug-metabolizing enzymes such as cytochrome P450 3A4 (CYP3A4). However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Turmeric might increase the risk of bleeding with warfarin.
One case of increased international normalized ratio (INR) has been reported for a patient taking warfarin who began taking turmeric. Prior to taking turmeric, the patient had stable INR measurements. Within a few weeks of starting turmeric supplementation, the patient's INR increased to 10. Additionally, curcumin, the active constituent in turmeric, has demonstrated antiplatelet effects in vitro, which may produce additive effects when taken with warfarin.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, turmeric might increase levels of drugs metabolized by CYP1A2. However, research is conflicting.
In vitro and animal research show that the turmeric constituent, curcumin, inhibits CYP1A2. However, other in vitro research suggests that curcumin does not significantly affect CYP1A2.

Likelihood Possible Evidence D
Docetaxel (Taxotere)

Theoretically, turmeric might increase blood levels of oral docetaxel.
Animal research suggests that the turmeric constituent, curcumin, enhances the oral bioavailability of docetaxel. However, the significance of this interaction is unclear, as this drug is typically administered intravenously in clinical settings.

Likelihood Possible Evidence D
Estrogens

Theoretically, large amounts of turmeric might interfere with hormone replacement therapy through competition for estrogen receptors.
In vitro research shows that curcumin, a constituent of turmeric, displaces the binding of estrogen to its receptors.

Likelihood Possible Evidence D
Glyburide (Diabeta, Others)

Theoretically, taking turmeric and glyburide in combination might increase the risk of hypoglycemia.
Clinical research shows that taking curcumin 475 mg daily for 10 days prior to taking glyburide 5 mg increases blood levels of glyburide by 12% at 2 hours after the dose in patients with type 2 diabetes. While maximal blood concentrations of glyburide were not affected, turmeric modestly decreased postprandial glucose levels for up to 24 hours when compared to glyburide alone, possibly due to the hypoglycemic effect of turmeric demonstrated in animal research.

Likelihood Possible Evidence B
Losartan (Cozaar)

Theoretically, turmeric might increase the effects of losartan.
Research in hypertensive rats shows that taking turmeric can increase the hypotensive effects of losartan.

Likelihood Possible Evidence D
Norfloxacin (Noroxin)

Theoretically, turmeric might increase the effects and adverse effects of norfloxacin.
Animal research shows that taking curcumin, a turmeric constituent, can increase blood levels of orally administered norfloxacin.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, turmeric might increase the absorption of P-glycoprotein substrates.
In vitro and animal research shows that curcuminoids and other constituents found in turmeric can inhibit P-glycoprotein expression and activity.

Likelihood Possible Evidence D
Paclitaxel (Abraxane, Onxol)

Theoretically, turmeric might alter blood levels of paclitaxel, although any effect may not be clinically relevant.
Clinical research in adults with breast cancer receiving intravenous paclitaxel suggests that taking turmeric may modestly alter paclitaxel pharmacokinetics. Patients received paclitaxel on day 1, followed by either no treatment or turmeric 2 grams daily from days 2-22. Pharmacokinetic modeling suggests that turmeric reduces the maximum concentration and area under the curve of paclitaxel by 12.1% and 7.7%, respectively. However, these changes are not likely to be considered clinically relevant. Conversely, animal research suggests that curcumin, a constituent of turmeric, enhances the oral bioavailability of paclitaxel. However, the significance of this interaction is unclear, as this drug is typically administered intravenously in clinical settings.

Likelihood Possible Evidence D
Turmeric Rhizome Extract, Dry, Raw full monograph & interactions

Peppermint Leaf Extract, Dry, Raw5 drug types · 796 drugs

Cyclosporine (Neoral, Sandimmune)

Theoretically, peppermint oil might increase the levels and adverse effects of cyclosporine.
In animal research, peppermint oil inhibits cyclosporine metabolism and increases cyclosporine levels. Inhibition of cytochrome P450 3A4 (CYP3A4) may be partially responsible for this interaction. An interaction between peppermint oil and cyclosporine has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, peppermint might increase the levels of CYP2C19 substrates.
In vitro research shows that peppermint oil inhibits CYP2C19. So far, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, peppermint might increase the levels of CYP2C9 substrates.
In vitro research shows that peppermint oil inhibits CYP2C9. So far, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, peppermint might increase the levels of CYP3A4 substrates.
Clinical research in healthy volunteers shows that a single dose of peppermint oil 600 mg inhibits CYP3A4 enzymes and increases the AUC of felodipine, a CYP3A4 substrate. However, in vitro research suggests that peppermint oil only inhibits CYP3A4 at very high concentrations.

Likelihood Possible Evidence B
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, peppermint might increase the levels of CYP1A2 substrates.
In vitro and animal research shows that peppermint oil and peppermint leaf inhibit CYP1A2. However, in clinical research, peppermint tea did not significantly affect the metabolism of caffeine, a CYP1A2 substrate. It is possible that the 6-day duration of treatment may have been too short to identify a difference.

Likelihood Possible Evidence B
Peppermint Leaf Extract, Dry, Raw full monograph & interactions

Fennel Seed Extract, Dry6 drug types · 740 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, fennel might increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.

Animal research suggests that fennel oil has antithrombotic and antiplatelet effects.

Likelihood Possible Evidence D
Ciprofloxacin (Cipro)

Theoretically, fennel might decrease the levels and clinical effects of ciprofloxacin.

Animal research shows that fennel reduces ciprofloxacin bioavailability by nearly 50%, possibly due to the metal cations such as calcium, iron, and magnesium contained in fennel. This study also found that fennel increased tissue distribution and slowed elimination of ciprofloxacin.

Likelihood Probable Evidence D
Contraceptive Drugs

Theoretically, taking large amounts of fennel might decrease the effects of contraceptive drugs due to competition for estrogen receptors.

Some constituents of fennel have estrogenic activity.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, fennel might increase levels of drugs metabolized by CYP3A4.

In vitro research suggests that fennel inhibits CYP3A4 enzyme activity. This effect has not been reported in humans.

Likelihood Possible Evidence D
Estrogens

Theoretically, taking large amounts of fennel might interfere with hormone replacement therapy due to competition for estrogen receptors.

Some constituents of fennel have estrogenic activity.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, taking large amounts of fennel might decrease the antiestrogenic effect of tamoxifen.

Some constituents of fennel have estrogenic activity, which may interfere with the antiestrogenic activity of tamoxifen.

Likelihood Possible Evidence D
Fennel Seed Extract, Dry full monograph & interactions

Cinnamon Bark Extract, Dry2 drug types · 442 drugs

Antidiabetes Drugs

Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Cassia cinnamon may lower blood glucose levels, and have additive effects in patients treated with antidiabetic agents. Dose adjustments to diabetes medications might be necessary.

Likelihood Possible Evidence B
Hepatotoxic Drugs

Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
There is some concern that ingesting large amounts of cassia cinnamon for an extended duration might cause hepatotoxicity in some people. Cassia cinnamon contains coumarin, which can cause hepatotoxicity in animal models. In humans, very high doses of coumarin from 50-7000 mg/day can result in hepatotoxicity that resolves when coumarin use is discontinued. Lower amounts might also cause liver problems in sensitive people, such as those with liver disease or those taking potentially hepatotoxic agents.

Likelihood Possible Evidence D
Cinnamon Bark Extract, Dry full monograph & interactions

Rosemary Leaf Extract, Dry, Raw6 drug types · 372 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, rosemary may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that rosemary inhibits platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, taking rosemary with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research shows that rosemary extract can decrease blood glucose levels in diabetic models. However, research in humans is conflicting. Although rosemary powder decreased blood glucose levels in healthy adults, no change in blood glucose levels was seen in adults with type 2 diabetes, most of whom were taking antidiabetes drugs.

Likelihood Possible Evidence B
Aspirin

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as aspirin.
Rosemary is reported to contain salicylates.

Likelihood Possible Evidence D
Choline Magnesium Trisalicylate (Trilisate)

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as choline magnesium trisalicylate.
Rosemary is reported to contain salicylate.

Likelihood Possible Evidence D
Salsalate (Disalcid)

Theoretically, rosemary might have additive effects with salicylate-containing drugs such as salsalate.
Rosemary is reported to contain salicylate.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, rosemary might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that rosemary induces CYP1A2 enzymes. This effect has not been reported in humans.

Likelihood Unlikely Evidence D
Rosemary Leaf Extract, Dry, Raw full monograph & interactions

Dill Seed Extract, Dry, Raw2 drug types · 87 drugs

Antidiabetes Drugs

Theoretically, dill extract might have additive effects with antidiabetes drugs and increase the risk of hypoglycemia. Animal research shows that dill extract can reduce blood sugar levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.
Some antidiabetes drugs include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), and others.

Likelihood Possible Evidence D
Lithium

Dill is thought to have diuretic properties. Theoretically, due to these potential diuretic effects, dill might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Dill Seed Extract, Dry, Raw full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Digestion Guard Non-Alcohol, from the product label.

Hawaii Pharm

See all Hawaii Pharm products
Name
Hawaii Pharm LLC
Street Address
510 Sumner St STE 613
City
Honolulu
State
HI
ZipCode
96817
Phone Number
888-542-9244
Web Address
Hawaiipharm.com
Pharmacist Counseling Corner

Digestion Guard Non-Alcohol by Hawaii Pharm: Common Questions

Does Digestion Guard Non-Alcohol by Hawaii Pharm interact with any medications?
Yes. Based on its ingredients, Digestion Guard Non-Alcohol has a known interaction with 1,179 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Digestion Guard Non-Alcohol contains 7 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is this safe to take if I'm pregnant?
Several of the ingredients—fennel, rosemary, and dill—are possibly unsafe in medicinal amounts during pregnancy. Peppermint, cinnamon, and turmeric appear safe at food amounts, but at supplement doses the data is less clear. Talk with your doctor or pharmacist about the dose before you use it.
Can I take this while breastfeeding?
Peppermint, cinnamon, and turmeric are likely safe while breastfeeding at food amounts. Fennel and dill have limited safety data for breastfeeding, especially at medicinal doses—check with your provider first. Rosemary safety while breastfeeding isn't clearly established in the data we hold.
What's peppermint in here for?
Peppermint is included because it's likely effective for irritable bowel syndrome and possibly effective for indigestion and nausea. It's the ingredient with the strongest evidence for digestive support.
Does the cinnamon in this lower blood sugar?
Cassia cinnamon may lower blood sugar and could add to the effects of diabetes medications, which is why it carries a Moderate interaction warning. If you're on diabetes drugs, your doctor may need to adjust your dose.
Will this help my digestion?
Peppermint is well established for IBS and possibly helpful for indigestion. Turmeric is possibly effective for indigestion too. The other ingredients have less rigorous evidence, so we can't say for certain whether they'll help your specific situation.
Does this product have any fillers?
Yes, it contains glycerin and water as inactive ingredients. Glycerin is a common humectant and sweetener in liquid supplements, and water is the base of the liquid formula.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Digestion Guard Non-Alcohol label
Go deeper

The Full Monographs Behind Digestion Guard Non-Alcohol’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Cassia Cinnamon

Interacts with 442 drugs

Cassia cinnamon is the common, inexpensive cinnamon used in cooking, and it is also taken as a supplement, most often for blood sugar support. The evidence for its health benefits is mixed a...

Read the full Cassia Cinnamon monograph → Herb & supplement monograph

Fennel

Interacts with 740 drugs

Fennel is a Mediterranean herb widely used as a food and spice, and traditionally taken for digestive complaints, colic, and menstrual cramps. Some small studies suggest possible benefit for...

Read the full Fennel monograph → Herb & supplement monograph

Peppermint

Interacts with 796 drugs

Peppermint is a popular herb with the best evidence supporting enteric-coated peppermint oil for easing IBS symptoms. It is generally well tolerated for most adults, but it can cause heartbu...

Read the full Peppermint monograph → Herb & supplement monograph

Turmeric

Interacts with 1,133 drugs

Turmeric is a popular spice whose main active compounds, curcuminoids, are studied mostly for inflammation and joint pain. Some research is promising, but quality is mixed and curcumin is po...

Read the full Turmeric monograph → Herb & supplement monograph

Rosemary

Interacts with 372 drugs

Rosemary is a fragrant Mediterranean herb that is safe and flavorful in normal food amounts. Some early research suggests possible benefits for memory, mood, and hair growth, but the evidenc...

Read the full Rosemary monograph → Herb & supplement monograph

Dill

Interacts with 87 drugs

Dill is a common culinary herb that has long been used in traditional medicine for digestive complaints, but solid human evidence for any medicinal use is limited. It is generally considered...

Read the full Dill monograph →
Sources

Sources & How We Checked

Digestion Guard Non-Alcohol's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 217 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Cassia Cinnamon 20 references
  1. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  2. Khan A, Safdar M, Ali Khan M, et al. Cinnamon improves glucose and lipids of people with type 2 diabetes. Diabetes Care 2003;26:3215-8. PubMed
  3. De Benito V, Alzaga R. Occupational allergic contact dermatitis from cassia (Chinese cinnamon) as a flavouring agent in coffee. Contact Dermatitis 1999;40:165. PubMed
  4. Drake TE, Maibach HI. Allergic contact dermatitis and stomatitis caused by a cinnamic aldehyde-flavored toothpaste. Arch Dermatol 1976;112:202-3.
  5. Press release. Cinnamon capsules to reduce blood sugar are medicinal products! Efficacy has not been scientifically proven - some products contain high levels of coumarin. Federal Institute of Risk Assessment (BfM), Germany, November 11, 2006. Available a
  6. Felter SP, Vassallo JD, Carlton BD, Daston GP. A safety assessment of coumarin taking into account species-specificity of toxicokinetics. Food Chem Toxicol 2006;44:462-75. PubMed
  7. Crawford P. Effectiveness of cinnamon for lowering hemoglobin A1C in patients with type 2 diabetes: a randomized, controlled trial. J Am Board Fam Med 2009;22:507-12. PubMed
  8. Akilen, R., Tsiami, A., Devendra, D., and Robinson, N. Glycated haemoglobin and blood pressure-lowering effect of cinnamon in multi-ethnic Type 2 diabetic patients in the UK: a randomized, placebo-controlled, double-blind clinical trial. Diabet.Med. 2010; PubMed
  9. Lu T, Sheng H Wu J Cheng Y Zhu J Chen Y. Cinnamon extract improves fasting blood glucose and glycosylated hemoglobin level in Chinese patients with type 2 diabetes. Nutr Res. 2012;32(6):408-412. PubMed
  10. Choi, J., Lee, K. T., Ka, H., Jung, W. T., Jung, H. J., and Park, H. J. Constituents of the essential oil of the Cinnamomum cassia stem bark and the biological properties. Arch Pharm Res 2001;24(5):418-423.
  11. Altschuler JA, Casella SJ, MacKenzie TA, Curtis KM. The effect of cinnamon on A1C among adolescents with type 1 diabetes. Diabetes Care 2007;30(4):813-6. PubMed
  12. Stoecker BR, Zhan Z, Luo R, et al. Cinnamon extract lowers blood glucose in hyperglycemic subjects. FASEB J. 2010;22:722.1 (Abstract only). DOI
  13. Admani S, Hill H, Jacob SE. Cinnamon Sugar Scrub Dermatitis: "Natural" Is Not Always Best. Pediatr Dermatol. 2017;34(1):e42-e43. PubMed
  14. Isaac-Renton M, Li MK, Parsons LM. Cinnamon spice and everything not nice: many features of intraoral allergy to cinnamic aldehyde. Dermatitis. 2015;26(3):116-21. PubMed
  15. Vandersall A, Katta R. Eyelid dermatitis as a manifestation of systemic contact dermatitis to cinnamon. Dermatitis. 2015 Jul-Aug;26(4):189. PubMed
  16. Wickenberg J, Lindstedt S, Nilsson J, Hlebowicz J. Cassia cinnamon does not change the insulin sensitivity or the liver enzymes in subjects with impaired glucose tolerance. Nutr J 2014 Sep 24;13:96. PubMed
  17. Brancheau D, Patel B, Zughaib M. Do cinnamon supplements cause acute hepatitis? Am J Case Rep 2015;16:250-4. PubMed
  18. Shekarchizadeh-Esfahani P, Heydarpour F, Izadi F, Jalili C. The effect of cinnamon supplementation on liver enzymes in adults: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med 2021;58:102699. PubMed
  19. Bernaola J, Valverde-Monge M, Otal-Buesa M, Cullen D, Heras-Mendaza F. Cinnamon allergic contact cheilitis. Contact Dermatitis 2023;88(5):418-419. PubMed
  20. Patel K, Howard M, Tate B. Cheilitis caused by allergic contact dermatitis to cinnamon in chai tea: A case report. Contact Dermatitis 2023;88(3):239-240. PubMed

See these in context on the Cassia Cinnamon monograph →

Fennel 17 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Zhu M, Wong PY, Li RC. Effect of oral administration of fennel (Foeniculum vulgare) on ciprofloxacin absorption and disposition in the rat. J Pharm Pharmacol 1999;51:1391-6.
  4. Gral N, Beani JC, Bonnot D, et al. [Plasma levels of psoralens after celery ingestion]. Ann Dermatol Venereol 1993;120:599-603.
  5. Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
  6. Rosti L, Nardini A, Bettinelli ME, Rosti D. Toxic effects of a herbal tea mixture in two newborns. Acta Paediatrica 1994;83:683. PubMed
  7. Cuzzolin L, Zaffani S, and Benoni G. Safety implications regarding use of phytomedicines. Eur.J Clin Pharmacol. 2006;62:37-42. PubMed
  8. Tognolini, M., Ballabeni, V., Bertoni, S., Bruni, R., Impicciatore, M., and Barocelli, E. Protective effect of Foeniculum vulgare essential oil and anethole in an experimental model of thrombosis. Pharmacol.Res 2007;56(3):254-260. PubMed
  9. Subehan, Usia, T., Iwata, H., Kadota, S., and Tezuka, Y. Mechanism-based inhibition of CYP3A4 and CYP2D6 by Indonesian medicinal plants. J Ethnopharmacol. 5-24-2006;105(3):449-455. PubMed
  10. Tognolini, M., Barocelli, E., Ballabeni, V., Bruni, R., Bianchi, A., Chiavarini, M., and Impicciatore, M. Comparative screening of plant essential oils: phenylpropanoid moiety as basic core for antiplatelet activity. Life Sci. 2-23-2006;78(13):1419-1432. PubMed
  11. Subehan, Zaidi, S. F., Kadota, S., and Tezuka, Y. Inhibition on human liver cytochrome P450 3A4 by constituents of fennel (Foeniculum vulgare): identification and characterization of a mechanism-based inactivator. J Agric.Food Chem. 12-12-2007;55(25):101 PubMed
  12. LEVY, S. B. Bronchial asthma due to ingestion of fennel and fennel seed. Ann.Allergy 1948;6(4):415.
  13. Ottolenghi, A., De Chiara, A., Arrigoni, S., Terracciano, L., and De Amici, M. [Diagnosis of food allergy caused by fruit and vegetables in children with atopic dermatitis]. Pediatr Med Chir 1995;17(6):525-530.
  14. Trabace L, Tucci P, Ciuffreda L, et al. "Natural" relief of pregnancy-related symptoms and neonatal outcomes: above all do no harm. J Ethnopharmacol. 2015;174:396-402. PubMed
  15. Denaxa D, Arkwright PD. Fennel as a cause of immediate hypersensitivity to toothpaste. Ann Allergy Asthma Immunol. 2020;125(1):99-100. PubMed
  16. Lee HW, Ang L, Lee MS, Alimoradi Z, Kim E. Fennel for reducing pain in primary dysmenorrhea: a systematic review and meta-analysis of randomized controlled trials. Nutrients 2020;12(11):3438. PubMed
  17. Mathew T, John SK, Javali M, Vasireddy M, Nadig R, Sarma GRK. Substance use related cluster headache: A case series. Headache 2022;62(7):908-910. PubMed

See these in context on the Fennel monograph →

Peppermint 41 references
  1. Liu JH, Chen GH, Yeh HZ, et al. Enteric-coated peppermint-oil capsules in the treatment of irritable bowel syndrome: a prospective, randomized trial. J Gastroenterol 1997;32:765-8. PubMed
  2. Pittler MH, Ernst E. Peppermint oil for irritable bowel syndrome: a critical review and metaanalysis. Am J Gastroenterol 1998;93:1131-5. PubMed
  3. Kline RM, Kline JJ, Di Palma J, Barbero GJ. Enteric-coated, pH-dependent peppermint oil capsules for the treatment of irritable bowel syndrome in children. J Pediatr 2001;138:125-8. PubMed
  4. Madisch A, Heydenreich CJ, Wieland V, et al. Treatment of functional dyspepsia with a fixed peppermint oil and caraway oil combination preparation as compared to cisapride. A multicenter, reference-controlled, double-blind equivalence study. Arzneimittel
  5. May B, Kuntz HD, Kieser M, Kohler S. Efficacy of a fixed peppermint oil/caraway oil combination in non-ulcer dyspepsia. Arzneimittelforschung 1996;46:1149-53.
  6. Micklefield GH, Greving I, May B. Effects of peppermint oil and caraway oil on gastroduodenal motility. Phytother Res 2000;14:20-3. DOI
  7. Morton CA, Garioch J, Todd P, et al. Contact sensitivity to menthol and peppermint in patients with intra-oral symptoms. Contact Dermatitis 1995;32:281-4. PubMed
  8. May B, Kohler S, Schneider B. Efficacy and tolerability of a fixed combination of peppermint oil and caraway oil in patients suffering from functional dyspepsia. Aliment Pharmacol Ther 2000;14:1671-7. PubMed
  9. Nash P, Gould SR, Bernardo DE. Peppermint oil does not relieve the pain of irritable bowel syndrome. Br J Clin Pract 1986;40:292-3. DOI
  10. Rees WD, Evans BK, Rhodes J. Treating irritable bowel syndrome with peppermint oil. Br Med J 1979;2:835-6. PubMed
  11. Davies SJ, Harding LM, Baranowski AP. A novel treatment of postherpetic neuralgia using peppermint oil. Clin J Pain 2002;18:200-2. PubMed
  12. Weston CF. Anal burning and peppermint oil. Postgrad Med J 1987;63:717. PubMed
  13. Dresser GK, Wacher V, Wong S, et al. Evaluation of peppermint oil and ascorbyl palmitate as inhibitors of cytochrome P4503A4 activity in vitro and in vivo. Clin Pharmacol Ther 2002;72:247-55. PubMed
  14. Wacher VJ, Wong S, Wong HT. Peppermint oil enhances cyclosporine oral bioavailability in rats: comparison with D-alpha-tocopheryl poly(ethylene glycol 1000) succinate (TPGS) and ketoconazole. J Pharm Sci 2002;91:77-90.
  15. Lawson MJ, Knight RE, Tran K, et al. Failure of enteric-coated peppermint oil in the irritable bowel syndrome: a randomized double-blind crossover study. J Gastroenterol Hepatol 1988;3:235-8. DOI
  16. Unger M, Frank A. Simultaneous determination of the inhibitory potency of herbal extracts on the activity of six major cytochrome P450 enzymes using liquid chromatography/mass spectrometry and automated online extraction. Rapid Commun Mass Spectrom 2004;1 PubMed
  17. Maliakal PP, Wanwimolruk S. Effect of herbal teas on hepatic drug metabolizing enzymes in rats. J Pharm Pharmacol 2001;53:1323-9. PubMed
  18. Rogers SN, Pahor AL. A form of stomatitis induced by excessive peppermint consumption. Dent Update 1995;22:36-7.
  19. Cappello G, Spezzaferro M, Grossi L, et al. Peppermint oil (Mintoil) in the treatment of irritable bowel syndrome: a prospective double blind placebo-controlled randomized trial. Dig Liver Dis 2007;39:530-6. PubMed
  20. Moghadam BK, Gier R, and Thurlow T. Extensive oral mucosal ulcerations caused by misuse of a commercial mouthwash. Cutis 1999;64:131-134.
  21. Andersen, K. E. Contact allergy to toothpaste flavors. Contact Dermatitis 1978;4(4):195-198. PubMed
  22. Barnard, D. R. Repellency of essential oils to mosquitoes (Diptera: Culicidae). J Med Entomol. 1999;36(5):625-629. PubMed
  23. Tamir, S., Davidovich, Z., Attal, P., and Eliashar, R. Peppermint oil chemical burn. Otolaryngol.Head Neck Surg. 2005;133(5):801-802. PubMed
  24. Kalavala, M., Hughes, T. M., Goodwin, R. G., Anstey, A. V., and Stone, N. M. Allergic contact dermatitis to peppermint foot spray. Contact Dermatitis 2007;57(1):57-58. PubMed
  25. Vermaat, H., van Meurs, T., Rustemeyer, T., Bruynzeel, D. P., and Kirtschig, G. Vulval allergic contact dermatitis due to peppermint oil in herbal tea. Contact Dermatitis 2008;58(6):364-365. PubMed
  26. Merat, S., Khalili, S., Mostajabi, P., Ghorbani, A., Ansari, R., and Malekzadeh, R. The effect of enteric-coated, delayed-release peppermint oil on irritable bowel syndrome. Dig.Dis.Sci. 2010;55(5):1385-1390. PubMed
  27. Tran, A., Pratt, M., and DeKoven, J. Acute allergic contact dermatitis of the lips from peppermint oil in a lip balm. Dermatitis 2010;21(2):111-115. DOI
  28. Hitz, Lindenmuller, I and Lambrecht, J. T. Oral care. Curr Probl.Dermatol 2011;40:107-115.
  29. Shavakhi, A., Ardestani, S. K., Taki, M., Goli, M., and Keshteli, A. H. Premedication with peppermint oil capsules in colonoscopy: a double blind placebo-controlled randomized trial study. Acta Gastroenterol Belg 2012;75(3):349-353.
  30. Lech, Y., Olesen, K. M., Hey, H., Rask-Pedersen, E., Vilien, M., and Ostergaard, O. [Treatment of irritable bowel syndrome with peppermint oil. A double- blind study with a placebo]. Ugeskr.Laeger 10-3-1988;150(40):2388-2389.
  31. Parys, B. T. Chemical burns resulting from contact with peppermint oil mar: a case report. Burns Incl.Therm.Inj. 1983;9(5):374-375. PubMed
  32. Bayat R, Borici-Mazi R. A case of anaphylaxis to peppermint. Allergy Asthma Clin Immunol. 2014;10(1):6. PubMed
  33. Rich G, Shah A, Koloski N, et al. A randomized placebo-controlled trial on the effects of Menthacarin, a proprietary peppermint- and caraway-oil-preparation, on symptoms and quality of life in patients with functional dyspepsia. Neurogastroenterol Motil 2 PubMed
  34. Douros A, Bronder E, Andersohn F, et al. Herb-Induced Liver Injury in the Berlin Case-Control Surveillance Study. Int J Mol Sci 2016;17(1). PubMed
  35. Begas E, Tsioutsiouliti A, Kouvaras E, et al. Effects of peppermint tea consumption on the activities of CYP1A2, CYP2A6, Xanthine Oxidase, N-acetyltranferase-2 and UDP-glucuronosyltransferases-1A1/1A6 in healthy volunteers. Food Chem Toxicol 2017;100:80-9 PubMed
  36. Cash BD, Epstein MS, Shah SM. A Novel Delivery System of Peppermint Oil Is an Effective Therapy for Irritable Bowel Syndrome Symptoms. Dig Dis Sci 2016;61(2):560-71. PubMed
  37. Elsaie LT, El Mohsen AM, Ibrahim IM, Mohey-Eddin MH, Elsaie ML. Effectiveness of topical peppermint oil on symptomatic treatment of chronic pruritus. Clin Cosmet Investig Dermatol 2016;9:333-8. PubMed
  38. Wu J, Xu R, Zhan R, et al. Effective symptomatic treatment for severe and intractable pruritus associated with severe burn-induced hypertrophic scars: A prospective, multicenter, controlled trial. Burns 2016;42(5):1059-66. PubMed
  39. Weerts ZZRM, Masclee AAM, Witteman BJM, et al. Efficacy and safety of peppermint oil in a randomized, double-blind trial of patients with irritable bowel syndrome. Gastroenterology. 2020;158(1):123-136. PubMed
  40. Nee J, Ballou S, Kelley JM, et al. Peppermint Oil Treatment for Irritable Bowel Syndrome: A Randomized Placebo-Controlled Trial. Am J Gastroenterol 2021;116(11):2279-2285. PubMed
  41. Ingrosso MR, Ianiro G, Nee J, et al. Systematic review and meta-analysis: efficacy of peppermint oil in irritable bowel syndrome. Aliment Pharmacol Ther 2022;56(6):932-41. PubMed

See these in context on the Peppermint monograph →

Turmeric 102 references
  1. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Sharma RA, McLelland HR, Hill KA, et al. Pharmacodynamic and pharmacokinetic study of oral Curcuma extract in patients with colorectal cancer. Clin Cancer Res 2001;7:1894-900..
  3. Shah BH, Nawaz Z, Pertani SA. Inhibitory effect of curcumin, a food spice from turmeric, on platelet-activating factor- and arachidonic acid-mediated platelet aggregation through inhibition of thromboxane formation and Ca2+ signaling. Biochem Pharmacol 1 PubMed
  4. Hata M, Sasaki E, Ota M, et al . Allergic contact dermatitis from curcumin (turmeric). Contact Dermatitis 1997;36:107-8. PubMed
  5. Kuttan R, Sudheeran PC, Josph CD. Turmeric and curcumin as topical agents in cancer therapy. Tumori 1987;73:29-31.. PubMed
  6. Thapliyal R, Deshpande SS, Maru GB. Mechanism(s) of turmeric-mediated protective effects against benzo(a)pyrene-derived DNA adducts. Cancer Lett 2002;175:79-88. PubMed
  7. Lee SW, Nah SS, Byon JS, et al. Transient complete atrioventricular block associated with curcumin intake. Int J Cardiol 2011;150:e50-2. PubMed
  8. Kuptniratsaikul V, Thanakhumtorn S, Chinswangwatanakul P, et al. Efficacy and safety of Curcuma domestica extracts in patients with knee osteoarthritis. J Altern Complement Med 2009;15:891-7.
  9. Carroll RE, Benya RV, Turgeon DK, et al. Phase IIa clinical trial of curcumin for the prevention of colorectal neoplasia. Cancer Prev Res (Phila) 2011;4:354-64. PubMed
  10. Junyaprasert, V. B., Soonthornchareonnon, N., Thongpraditchote, S., Murakami, T., and Takano, M. Inhibitory effect of Thai plant extracts on P-glycoprotein mediated efflux. Phytother.Res 2006;20(1):79-81. PubMed
  11. Ampasavate, C., Sotanaphun, U., Phattanawasin, P., and Piyapolrungroj, N. Effects of Curcuma spp. on P-glycoprotein function. Phytomedicine. 2010;17(7):506-512. PubMed
  12. Hou, X. L., Takahashi, K., Tanaka, K., Tougou, K., Qiu, F., Komatsu, K., Takahashi, K., and Azuma, J. Curcuma drugs and curcumin regulate the expression and function of P-gp in Caco-2 cells in completely opposite ways. Int.J Pharm 6-24-2008;358(1-2):224-2 PubMed
  13. Choi, B. H., Kim, C. G., Lim, Y., Shin, S. Y., and Lee, Y. H. Curcumin down-regulates the multidrug-resistance mdr1b gene by inhibiting the PI3K/Akt/NF kappa B pathway. Cancer Lett. 1-18-2008;259(1):111-118.
  14. Zhang, W., Tan, T. M., and Lim, L. Y. Impact of curcumin-induced changes in P-glycoprotein and CYP3A expression on the pharmacokinetics of peroral celiprolol and midazolam in rats. Drug Metab Dispos. 2007;35(1):110-115. PubMed
  15. Limtrakul, P., Chearwae, W., Shukla, S., Phisalphong, C., and Ambudkar, S. V. Modulation of function of three ABC drug transporters, P-glycoprotein (ABCB1), mitoxantrone resistance protein (ABCG2) and multidrug resistance protein 1 (ABCC1) by tetrahydrocu
  16. Holland, M. L., Panetta, J. A., Hoskins, J. M., Bebawy, M., Roufogalis, B. D., Allen, J. D., and Arnold, J. C. The effects of cannabinoids on P-glycoprotein transport and expression in multidrug resistant cells. Biochem.Pharmacol 4-14-2006;71(8):1146-1154 PubMed
  17. Tang, X. Q., Bi, H., Feng, J. Q., and Cao, J. G. Effect of curcumin on multidrug resistance in resistant human gastric carcinoma cell line SGC7901/VCR. Acta Pharmacol Sin. 2005;26(8):1009-1016. PubMed
  18. Nabekura, T., Kamiyama, S., and Kitagawa, S. Effects of dietary chemopreventive phytochemicals on P-glycoprotein function. Biochem.Biophys.Res Commun. 2-18-2005;327(3):866-870. PubMed
  19. Romiti, N., Tongiani, R., Cervelli, F., and Chieli, E. Effects of curcumin on P-glycoprotein in primary cultures of rat hepatocytes. Life Sci. 1998;62(25):2349-2358. PubMed
  20. Yue, G. G., Cheng, S. W., Yu, H., Xu, Z. S., Lee, J. K., Hon, P. M., Lee, M. Y., Kennelly, E. J., Deng, G., Yeung, S. K., Cassileth, B. R., Fung, K. P., Leung, P. C., and Lau, C. B. The role of turmerones on curcumin transportation and P-glycoprotein acti
  21. Shenouda, N. S., Zhou, C., Browning, J. D., Ansell, P. J., Sakla, M. S., Lubahn, D. B., and MacDonald, R. S. Phytoestrogens in common herbs regulate prostate cancer cell growth in vitro. Nutr.Cancer 2004;49(2):200-208. PubMed
  22. Appiah-Opong, R., Commandeur, J. N., Vugt-Lussenburg, B., and Vermeulen, N. P. Inhibition of human recombinant cytochrome P450s by curcumin and curcumin decomposition products. Toxicology 6-3-2007;235(1-2):83-91. PubMed
  23. Hou, X. L., Takahashi, K., Kinoshita, N., Qiu, F., Tanaka, K., Komatsu, K., Takahashi, K., and Azuma, J. Possible inhibitory mechanism of Curcuma drugs on CYP3A4 in 1alpha,25 dihydroxyvitamin D3 treated Caco-2 cells. Int.J Pharm 6-7-2007;337(1-2):169-177.
  24. Valentine, S. P., Le Nedelec, M. J., Menzies, A. R., Scandlyn, M. J., Goodin, M. G., and Rosengren, R. J. Curcumin modulates drug metabolizing enzymes in the female Swiss Webster mouse. Life Sci. 4-11-2006;78(20):2391-2398. PubMed
  25. Price, R. J., Scott, M. P., Giddings, A. M., Walters, D. G., Stierum, R. H., Meredith, C., and Lake, B. G. Effect of butylated hydroxytoluene, curcumin, propyl gallate and thiabendazole on cytochrome P450 forms in cultured human hepatocytes. Xenobiotica 2 PubMed
  26. Ganta, S., Devalapally, H., and Amiji, M. Curcumin enhances oral bioavailability and anti-tumor therapeutic efficacy of paclitaxel upon administration in nanoemulsion formulation. J Pharm Sci 2010;99(11):4630-4641. PubMed
  27. Lamb, S. R. and Wilkinson, S. M. Contact allergy to tetrahydrocurcumin. Contact Dermatitis 2003;48(4):227. PubMed
  28. Joshi, J., Ghaisas, S., Vaidya, A., Vaidya, R., Kamat, D. V., Bhagwat, A. N., and Bhide, S. Early human safety study of turmeric oil (Curcuma longa oil) administered orally in healthy volunteers. J Assoc.Physicians India 2003;51:1055-1060.
  29. Mahesh, T., Balasubashini, M. S., and Menon, V. P. Effect of photo-irradiated curcumin treatment against oxidative stress in streptozotocin-induced diabetic rats. J Med.Food 2005;8(2):251-255. PubMed
  30. Thompson, D. A. and Tan, B. B. Tetrahydracurcumin-related allergic contact dermatitis. Contact Dermatitis 2006;55(4):254-255. PubMed
  31. Patumraj, S., Wongeakin, N., Sridulyakul, P., Jariyapongskul, A., Futrakul, N., and Bunnag, S. Combined effects of curcumin and vitamin C to protect endothelial dysfunction in the iris tissue of STZ-induced diabetic rats. Clin Hemorheol.Microcirc. 2006;3
  32. Liddle, M., Hull, C., Liu, C., and Powell, D. Contact urticaria from curcumin. Dermatitis 2006;17(4):196-197. PubMed
  33. Juan, H., Terhaag, B., Cong, Z., Bi-Kui, Z., Rong-Hua, Z., Feng, W., Fen-Li, S., Juan, S., Jing, T., and Wen-Xing, P. Unexpected effect of concomitantly administered curcumin on the pharmacokinetics of talinolol in healthy Chinese volunteers. Eur.J Clin PubMed
  34. Murugan, P. and Pari, L. Influence of tetrahydrocurcumin on erythrocyte membrane bound enzymes and antioxidant status in experimental type 2 diabetic rats. J Ethnopharmacol. 9-25-2007;113(3):479-486. PubMed
  35. Seo, K. I., Choi, M. S., Jung, U. J., Kim, H. J., Yeo, J., Jeon, S. M., and Lee, M. K. Effect of curcumin supplementation on blood glucose, plasma insulin, and glucose homeostasis related enzyme activities in diabetic db/db mice. Mol.Nutr.Food Res 2008;5
  36. Weisberg, S. P., Leibel, R., and Tortoriello, D. V. Dietary curcumin significantly improves obesity-associated inflammation and diabetes in mouse models of diabesity. Endocrinology 2008;149(7):3549-3558. PubMed
  37. Jain, S. K., Rains, J., Croad, J., Larson, B., and Jones, K. Curcumin supplementation lowers TNF-alpha, IL-6, IL-8, and MCP-1 secretion in high glucose-treated cultured monocytes and blood levels of TNF-alpha, IL-6, MCP-1, glucose, and glycosylated hemog
  38. Yu, Y., Hu, S. K., and Yan, H. [The study of insulin resistance and leptin resistance on the model of simplicity obesity rats by curcumin]. Zhonghua Yu Fang Yi.Xue.Za Zhi. 2008;42(11):818-822.
  39. Pavithra, B. H., Prakash, N., and Jayakumar, K. Modification of pharmacokinetics of norfloxacin following oral administration of curcumin in rabbits. J Vet.Sci. 2009;10(4):293-297. PubMed
  40. Yan, Y. D., Kim, D. H., Sung, J. H., Yong, C. S., and Choi, H. G. Enhanced oral bioavailability of docetaxel in rats by four consecutive days of pre-treatment with curcumin. Int J Pharm 10-31-2010;399(1-2):116-120. PubMed
  41. Epelbaum, R., Schaffer, M., Vizel, B., Badmaev, V., and Bar-Sela, G. Curcumin and gemcitabine in patients with advanced pancreatic cancer. Nutr Cancer 2010;62(8):1137-1141. PubMed
  42. Madkor, H. R., Mansour, S. W., and Ramadan, G. Modulatory effects of garlic, ginger, turmeric and their mixture on hyperglycaemia, dyslipidaemia and oxidative stress in streptozotocin-nicotinamide diabetic rats. Br J Nutr 2011;105(8):1210-1217. PubMed
  43. Pungcharoenkul, K. and Thongnopnua, P. Effect of different curcuminoid supplement dosages on total in vivo antioxidant capacity and cholesterol levels of healthy human subjects. Phytother Res 2011;25(11):1721-1726.
  44. Kusuhara, H., Furuie, H., Inano, A., Sunagawa, A., Yamada, S., Wu, C., Fukizawa, S., Morimoto, N., Ieiri, I., Morishita, M., Sumita, K., Mayahara, H., Fujita, T., Maeda, K., and Sugiyama, Y. Pharmacokinetic interaction study of sulphasalazine in healthy
  45. Mohammadi, A., Sahebkar, A., Iranshahi, M., Amini, M., Khojasteh, R., Ghayour-Mobarhan, M., and Ferns, G. A. Effects of supplementation with curcuminoids on dyslipidemia in obese patients: a randomized crossover trial. Phytother Res 2013;27(3):374-379. PubMed
  46. Chuengsamarn, S., Rattanamongkolgul, S., Luechapudiporn, R., Phisalaphong, C., and Jirawatnotai, S. Curcumin extract for prevention of type 2 diabetes. Diabetes Care 2012;35(11):2121-2127. PubMed
  47. Goh, C. L. and Ng, S. K. Allergic contact dermatitis to Curcuma longa (turmeric). Contact Dermatitis 1987;17(3):186. PubMed
  48. Srivastava, R., Puri, V., Srimal, R. C., and Dhawan, B. N. Effect of curcumin on platelet aggregation and vascular prostacyclin synthesis. Arzneimittelforschung. 1986;36(4):715-717.
  49. Srinivasan, M. Effect of curcumin on blood sugar as seen in a diabetic subject. Indian J Med Sci 1972;26(4):269-270.
  50. Srivastava, K. C., Bordia, A., and Verma, S. K. Curcumin, a major component of food spice turmeric (Curcuma longa) inhibits aggregation and alters eicosanoid metabolism in human blood platelets. Prostaglandins Leukot.Essent.Fatty Acids 1995;52(4):223-227 PubMed
  51. Oetari, S., Sudibyo, M., Commandeur, J. N., Samhoedi, R., and Vermeulen, N. P. Effects of curcumin on cytochrome P450 and glutathione S-transferase activities in rat liver. Biochem Pharmacol 1-12-1996;51(1):39-45. PubMed
  52. Kiec-Swierczynska, M. and Krecisz, B. Occupational allergic contact dermatitis due to curcumin food colour in a pasta factory worker. Contact Dermatitis 1998;39(1):30-31. PubMed
  53. Van Dau N, Ngoc Ham N, Huy Khac D, and et al. The effects of a traditional drug, tumeric (Curcuma longa), and placebo on the healing of duodenal ulcer. Phytomed 1998;5(1):29-34.
  54. Daveluy A, Géniaux H, Thibaud L, Mallaret M, Miremont-Salamé G, Haramburu F. Probable interaction between an oral vitamin K antagonist and turmeric (Curcuma longa). Therapie. 2014 Nov-Dec;69(6):519-20. PubMed
  55. Kuptniratsaikul V, Dajpratham P, Taechaarpornkul W, Buntragulpoontawee M, Lukkanapichonchut P, Chootip C, Saengsuwan J, Tantayakom K, Laongpech S. Efficacy and safety of Curcuma domestica extracts compared with ibuprofen in patients with knee osteoarthrit
  56. Madhu K, Chanda K, Saji MJ. Safety and efficacy of Curcuma longa extract in the treatment of painful knee osteoarthritis: a randomized placebo-controlled trial. Inflammopharmacology 2013;21(2):129-36. PubMed
  57. Mali AM, Behal R, Gilda SS. Comparative evaluation of 0.1% turmeric mouthwash with 0.2% chlorhexidine gluconate in prevention of plaque and gingivitis: A clinical and microbiological study. J Indian Soc Periodontol 2012;16(3):386-91. PubMed
  58. Sanmukhani J, Satodia V, Trivedi J, Patel T, Tiwari D, Panchal B, Goel A, Tripathi CB. Efficacy and safety of curcumin in major depressive disorder: a randomized controlled trial. Phytother Res 2014;28(4):579-85. PubMed
  59. Nayeri A, Wu S, Adams E, et al. Acute Calcineurin Inhibitor Nephrotoxicity Secondary to Turmeric Intake: A Case Report. Transplant Proc. 2017;49(1):198-200. PubMed
  60. Mitchell TM. Correspondence re: Somasundaram et al., Dietary curcumin inhibits chemotherapy-induced apoptosis in models of human breast cancer. Cancer Res. 2003;63(16):5165-6; author reply 5166-7.
  61. Somasundaram S, Edmund NA, Moore DT, Small GW, Shi YY, Orlowski RZ. Dietary curcumin inhibits chemotherapy-induced apoptosis in models of human breast cancer. Cancer Res. 2002;62(13):3868-75.
  62. Haroyan A, Mukuchyan V, Mkrtchyan N, et al. Efficacy and safety of curcumin and its combination with boswellic acid in osteoarthritis: a comparative, randomized, double-blind, placebo-controlled study. BMC Complement Altern Med. 2018;18(1):7. PubMed
  63. Al-Karawi D, Al Mamoori DA, Tayyar Y. The role of curcumin administration in patients with major depressive disorder: Mini meta-analysis of clinical trials. Phytother Res. 2016;30(2):175-83. PubMed
  64. Neerati P, Devde R, Gangi AK. Evaluation of the effect of curcumin capsules on glyburide therapy in patients with type-2 diabetes mellitus. Phytother Res. 2014;28(12):1796-800. PubMed
  65. Simental-Mendía LE, Pirro M, Gotto AM Jr, et al. Lipid-modifying activity of curcuminoids: A systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr. 2017:1-10. PubMed
  66. Fung FY, Wong WH, Ang SK, et al. A randomized, double-blind, placebo- controlled study on the anti-haemostatic effects of Curcuma longa, Angelica sinensis and Panax ginseng. Phytomedicine. 2017;32:88-96. PubMed
  67. Small GW, Siddarth P, Li Z, et al. Memory and brain amyloid and tau effects of a bioavailable form of curcumin in non-demented adults: A double-blind, placebo-controlled 18-month trial. Am J Geriatr Psychiatry. 2018;26(3):266-277.
  68. Cruz-Correa M, Hylind LM, Marrero JH, et al. Efficacy and safety of curcumin in treatment of intestinal adenomas in patients with familial adenomatous polyposis. Gastroenterology. 2018 May 23. Pii:S0016-5085(18)34564-5. [Epub ahead of print] PubMed
  69. Rahmani S, Asgary S, Askari G, et al. Treatment of non-alcoholic fatty liver disease with curcumin: a randomized placebo-controlled trial. Phytother Res. 2016 Sep;30(9):1540-8. PubMed
  70. Lopez-Villafuerte L, CLores KH. Contact dermatitis caused by turmeric in a massage oil. Contact Dermatitis. 2016 Jul;75(1):52-3. PubMed
  71. Lukefahr AL, McEvoy S, Alfafara C, Funk JL. Drug-induced autoimmune hepatitis associated with turmeric dietary supplement use. BMJ Case Rep. 2018. pii: bcr-2018-224611. PubMed
  72. Medsafe Safety Communication- Turmeric/Curcumin Interaction with Warfarin. April 30, 2018. Accessed at: https://medsafe.govt.nz/safety/EWS/2018/Turmeric.asp.
  73. Imam Z, Khasawneh M, Jomaa D, Iftikhar H, Sayedahmad Z. Drug induced liver injury attributed to a curcumin supplement. Case Rep Gastrointest Med 2019 Oct 20;2019:6029403. doi: 10.1155/2019/6029403. PubMed
  74. Chand S, Hair C, Beswick L. A rare case of turmeric-induced hepatotoxicity. Intern Med J. 2020;50(2):258-259. PubMed
  75. Jiang N, Zhang M, Meng X, Sun B. Effects of Curcumin on the Pharmacokinetics of Amlodipine in Rats and Its Potential Mechanism. Pharm Biol. 2020;58(1):465-468. PubMed
  76. Lee BS, Bhatia T, Chaya CT, Wen R, Taira MT, Lim BS. Autoimmune Hepatitis Associated With Turmeric Consumption. ACG Case Rep J. 2020;7(3):e00320. PubMed
  77. Lombardi N, Crescioli G, Maggini V, et al. Acute liver injury following turmeric use in Tuscany: an analysis of the Italian Phytovigilance database and systematic review of case reports. Br J Clin Pharmacol. 2020. PubMed
  78. Suhail FK, Masood U, Sharma A, John S, Dhamoon A. Turmeric supplement induced hepatotoxicity: a rare complication of a poorly regulated substance. Clin Toxicol (Phila). 2020;58(3):216-217. PubMed
  79. Nakagawa Y, Mukai S, Yamada S, et al. The efficacy and safety of highly-bioavailable curcumin for treating knee osteoarthritis: a 6-month open-labeled prospective study. Clin Med Insights Arthritis Musculoskelet Disord. 2020;13:1179544120948471. PubMed
  80. Shafabakhsh R, Asemi Z, Reiner Z, Soleimani A, Aghadavod E, Bahmani F. The effects of nano-curcumin on metabolic status in patients with diabetes on hemodialysis, a randomized, double blind, placebo-controlled trial. Iran J Kidney Dis. 2020;14(4):290-9.
  81. Allegri P, Rosa R, Masala A, et al. Clinical effectiveness of a new oral curcumin formulation in acute non-infectious uveitic macular edema: a 12-month observational study. Eur Rev Med Pharmacol Sci 2022;26(1):46-53.
  82. Tsai IC, Hsu CW, Chang CH, Tseng PT, Chang KV. The effect of curcumin differs on individual cognitive domains across different patient populations: A systematic review and meta-analysis. Pharmaceuticals (Basel) 2021;14(12):1235. PubMed
  83. Alam MA, Bin Jardan YA, Raish M, Al-Mohizea AM, Ahad A, Al-Jenoobi FI. Herb-drug interaction: Pharmacokinetics and pharmacodynamics of anti-hypertensive drug amlodipine besylate in presence of lepidium sativum and curcuma longa. Xenobiotica 2022;1-9.
  84. Sohal A, Alhankawi D, Sandhu S, Chintanaboina J. Turmeric-induced hepatotoxicity: Report of 2 cases. Int Med Case Rep J 2021;14:849-852. PubMed
  85. Hussaarts KGAM, Hurkmans DP, Oomen-de Hoop E, et al. Impact of curcumin (with or without piperine) on the pharmacokinetics of tamoxifen. Cancers (Basel). 2019;11(3):403. PubMed
  86. Kalluru H, Mallayasamy SR, Kondaveeti SS, Chandrasekhar V, Kalachaveedu M. Effect of turmeric supplementation on the pharmacokinetics of paclitaxel in breast cancer patients: A study with population pharmacokinetics approach. Phytother Res 2022;36(4):1761 PubMed
  87. 109288 Halegoua-DeMarzio D, Navarro V, Ahmad J, et al. Liver injury associated with turmeric-A growing problem: Ten cases from the drug-induced liver injury network [DILIN]. Am J Med. 2022:S0002-9343(22)00740-9. PubMed
  88. Arzallus T, Izagirre A, Castiella A, Torrente S, Garmendia M, Zapata EM. Drug induced autoimmune hepatitis after turmeric intake. Gastroenterol Hepatol 2023. PubMed
  89. Gilad O, Rosner G, Ivancovsky-Wajcman D, et al. Efficacy of wholistic turmeric supplement on adenomatous polyps in patients with familial adenomatous polyposis-A randomized, double-blinded, placebo-controlled study. Genes (Basel) 2022;13(12):2182. PubMed
  90. Ahad A, Raish M, Abdelrahman IA, et al. Changes in pharmacokinetics and pharmacodynamics of losartan in experimental diseased rats treated with Curcuma longa and Lepidium sativum. Pharmaceuticals (Basel) 2022;16(1):33. PubMed
  91. Haron MH, Dale O, Martin K, et al. Evaluation of the Herb-Drug Interaction Potential of Commonly Used Botanicals on the US Market with Regard to PXR- and AhR-Mediated Influences on CYP3A4 and CYP1A2. J Diet Suppl 2022. PubMed
  92. Pochet S, Lechon AS, Lescrainier C, et al. Herb-anticancer drug interactions in real life based on VigiBase, the WHO global database. Sci Rep 2022;12(1):14178. PubMed
  93. Kou H, Huang L, Jin M, He Q, Zhang R, Ma J. Effect of curcumin on rheumatoid arthritis: a systematic review and meta-analysis. Front Immunol 2023;14:1121655. PubMed
  94. Qiu L, Gao C, Wang H, et al. Effects of dietary polyphenol curcumin supplementation on metabolic, inflammatory, and oxidative stress indices in patients with metabolic syndrome: a systematic review and meta-analysis of randomized controlled trials. Front PubMed
  95. Sato T, Yagi A, Yamauchi M, et al. The use of an antioxidant enables accurate evaluation of the interaction of curcumin on organic anion-transporting polypeptides 4C1 by preventing auto-oxidation. Int J Mol Sci 2024;25(2):991. PubMed
  96. Washington O, Robinson E, Simh D, et al. Oxalate nephropathy and chronic turmeric supplementation: a case report. J Bras Nefrol 2024;46(1):99-106. PubMed
  97. Munshi R, Karande-Patil S, Kumbhar D, Deshmukh A, Hingorani L. A randomized, controlled, comparative, proof-of-concept study to evaluate the efficacy and safety of Nisha-Amalaki capsules in prediabetic patients for preventing progression to diabetes. J Ay PubMed
  98. Sharifi Razavi A, Mohajerani F, Niksolat F, Karimi N. Efficacy of topical curcumin on mild to moderate carpal tunnel syndrome: a randomized double-blind, placebo-controlled clinical trial. Pain Med 2024;25(5):327-333. PubMed
  99. Yaikwawong M, Jansarikit L, Jirawatnotai S, Chuengsamarn S. Curcumin Reduces Depression in Obese Patients with Type 2 Diabetes: A Randomized Controlled Trial. Nutrients 2024;16(15):2414. PubMed
  100. Tehrani SD, Hosseini A, Shahzamani M, et al. Evaluation of the effectiveness of curcumin and piperine co-supplementation on inflammatory factors, cardiac biomarkers, atrial fibrillation, and clinical outcomes after coronary artery bypass graft surgery. Cl PubMed
  101. Yaikwawong M, Jansarikit L, Jirawatnotai S, Chuengsamarn S. The Effect of Curcumin on Reducing Atherogenic Risks in Obese Patients with Type 2 Diabetes: A Randomized Controlled Trial. Nutrients 2024;16(15):2441. PubMed
  102. Dibaei M, Hosseini A, Lavasani H, Kiani-Dehkordi B, Rouini M. Assessment of metabolic interaction between curcumin and tramadol using the isolated perfused rat liver. Heliyon 2024;10(15):e35070. PubMed

See these in context on the Turmeric monograph →

Rosemary 20 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
  3. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  4. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  5. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  6. Cartier LC, Lehrer A, Malo JL. Occupational asthma caused by aromatic herbs. Allergy 1996;51:647-9. DOI
  7. Burkhard PR, Burkhardt K, Haenggeli CA, Landis T. Plant-induced seizures: reappearance of an old problem. J Neurol 1999;246:667-70. PubMed
  8. Swain AR, Dutton SP, Truswell AS. Salicylates in foods. J Am Diet.Assoc 1985;85(8):950-60. DOI
  9. Zhu BT, Loder DP, Cai MX, et al. Dietary administration of an extract from rosemary leaves enhances the liver microsomal metabolism of endogenous estrogens and decreases their uterotropic action in CD-1 mice. Carcinogenesis 1998;19(10):1821-7. PubMed
  10. Debersac P, Heydel JM, Amiot MJ, et al. Induction of cytochrome P450 and/or detoxication enzymes by various extracts of rosemary: description of specific patterns. Food Chem Toxicol 2001;39(9):907-18. PubMed
  11. Debersac P, Vernevaut MF, Amiot MJ, et al. Effects of a water-soluble extract of rosemary and its purified component rosmarinic acid on xenobiotic-metabolizing enzymes in rat liver. Food Chem Toxicol 2001;39(2):109-17. PubMed
  12. Lee JJ, Jin YR, Lee JH, et al. Antiplatelet activity of carnosic acid, a phenolic diterpene from Rosmarinus officinalis. Planta Med 2007;73(2):121-7.
  13. Yamamoto J, Yamada K, Naemura A, et al. Testing various herbs for antithrombotic effect. Nutrition 2005;21(5):580-7. PubMed
  14. Naemura A, Ura M, Yamashita T, et al. Long-term intake of rosemary and common thyme herbs inhibits experimental thrombosis without prolongation of bleeding time. Thromb Res 2008;122(4):517-22. PubMed
  15. Lee JJ, Jin YR, Lim Y, et al. Antiplatelet activity of carnosol is mediated by the inhibition of TXA2 receptor and cytosolic calcium mobilization. Vascul Pharmacol 2006;45:148-53. PubMed
  16. Bakirel, T., Bakirel, U., Keles, O. U., Ulgen, S. G., and Yardibi, H. In vivo assessment of antidiabetic and antioxidant activities of rosemary (Rosmarinus officinalis) in alloxan-diabetic rabbits. J Ethnopharmacol 2-28-2008;116(1):64-73. PubMed
  17. Erenmemisoglu, A., Saraymen, R., and Ustun, S. Effect of a Rosmarinus officinalis leave extract on plasma glucose levels in normoglycaemic and diabetic mice. Pharmazie 1997;52(8):645-646.
  18. Valones MAA, Silva ICG, Gueiros LAM, Leão JC, Caldas AF Jr, Carvalho AAT. Clinical assessment of rosemary-based toothpaste (Rosmarinus officinalis Linn.): A randomized controlled double-blind study. Braz Dent J. 2019;30(2):146-151. PubMed
  19. Quirarte-Báez SM, Zamora-Perez AL, Reyes-Estrada CA, et al. A shortened treatment with rosemary tea (rosmarinus officinalis) instead of glucose in patients with diabetes mellitus type 2 (TSD). J Popul Ther Clin Pharmacol. 2019;26(4):e18-e28.
  20. Al Jamal A. Effect of rosemary (Rosmarinus officinalis) on lipid profiles and blood glucose in human diabetic patients (type-2). African J. Biochem. Res. 2014;8(8):147-50. DOI

See these in context on the Rosemary monograph →

Dill 17 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  3. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  4. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  5. Freeman, G. L. Allergy to fresh dill. Allergy 1999;54(5):531-532. PubMed
  6. Chiu, A. M. and Zacharisen, M. C. Anaphylaxis to dill. Ann Allergy Asthma Immunol. 2000;84(5):559-560.
  7. Monteseirin, J., Perez-Formoso, J. L., Sanchez-Hernandez, M. C., Hernandez, M., Camacho, M. J., Bonilla, I., Guardia, P., and Conde, J. Occupational contact dermatitis to dill. Allergy 2002;57(9):866-867. PubMed
  8. Monteseirin, J., Perez-Formoso, J. L., Hernandez, M., Sanchez-Hernandez, M. C., Camacho, M. J., Bonilla, I., Chaparro, A., and Conde, J. Contact urticaria from dill. Contact Dermatitis 2003;48(5):275. PubMed
  9. Kojuri, J., Vosoughi, A. R., and Akrami, M. Effects of anethum graveolens and garlic on lipid profile in hyperlipidemic patients. Lipids Health Dis. 2007;6:5. PubMed
  10. Panda, S. The effect of Anethum graveolens L. (dill) on corticosteroid induced diabetes mellitus: involvement of thyroid hormones. Phytother.Res 2008;22(12):1695-1697.
  11. Madani H, Mahmoodabady NA Vahdati A. Effects of hydroalchoholic [sic] extract of Anethum graveolens (DILL) on plasma glucose an [sic] lipid levels in diabetes induced rats. Iranian Journal of Diabetes & Lipid Disorders 2006;5(2):E13.
  12. Hekmatzadeh SF, Bazarganipour F, Malekzadeh J, Goodarzi F, Aramesh S. A randomized clinical trial of the efficacy of applying a simple protocol of boiled Anethum Graveolens seeds on pain intensity and duration of labor stages. Complement Ther Med. 2014;22 PubMed
  13. Sohm B, Cenizo V, André V, Zahouani H, Pailler-Mattei C, Vogelgesang B. Evaluation of the efficacy of a dill extract in vitro and in vivo. Int J Cosmet Sci. 2011;33(2):157-63.
  14. Hekmatzadeh SF, Bazarganipour F, Allan H, Aramesh S, Mohammadi J. Effects of boiled dill seed on anxiety during labor: A randomized clinical trial. Chin J Integr Med. 2020;26(2):100-105. PubMed
  15. Omidvar S, Nasiri-Amiri F, Bakhtiari A, Begum K. Clinical trial for the management dysmenorrhea using selected spices. Complement Ther Clin Pract. 2019;36:34-38. PubMed
  16. Haidari F, Zakerkish M, Borazjani F, Ahmadi Angali K, Amoochi Foroushani G. The effects of Anethum graveolens (dill) powder supplementation on clinical and metabolic status in patients with type 2 diabetes. Trials 2020;21(1):483. PubMed
  17. Mousavi SM, Beatriz Pizarro A, Akhgarjand C, et al. The effects of Anethum graveolens (dill) supplementation on lipid profile and glycemic control: a systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2022;62(21):5

See these in context on the Dill monograph →

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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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