Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Upper Respiratory Support Ingredients & Drug Interactions

by Wise Woman Herbals

Upper Respiratory Support 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 Upper Respiratory Support 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

Upper Respiratory Support is a dietary supplement by Wise Woman Herbals with 7 active ingredients. Its ingredients are commonly taken for psoriasis (topical), eczema and other skin conditions, digestive upset.Based on those ingredients, 1,338 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Oregon Grape, Thyme, Elecampane. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Upper Respiratory Support by Wise Woman Herbals

Ask about any prescription or over-the-counter medication and we check it for interactions with Upper Respiratory Support by Wise Woman Herbals — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Upper Respiratory Support by Wise Woman Herbals

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 Blend” is a proprietary blend — the label gives one combined amount (3 mL) without saying how much of each component you get.

Upper Respiratory Support contains 7 ingredients in a proprietary blend form, six of which are herbal extracts: Oregon grape, elecampane, yarrow, horseradish, stinging nettle, wild bergamot, and thyme. These are the active components.

The product also contains inactive ingredients — alcohol, spring water, and glycerine — which serve as preservatives and carriers for the herbs. Each herb has a traditional role in respiratory or immune support, though the evidence for most conditions is limited or not yet established in our data.

The blend is presented as a liquid tincture, which allows for flexible dosing.

Does it work?

Not established
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
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: Upper respiratory support.
  • We looked for evidence on: Asthma, Bronchitis, Common cold, Cough, Laryngitis, Respiratory tract infections — and 4 related terms.
  • The closest evidence on file: Elecampane is rated "Insufficient Reliable Evidence To Rate" for Cough (Natural Medicines).
  • Also on file: Yarrow is rated "Insufficient Reliable Evidence To Rate" for Tonsillitis.
  • Also on file: Horseradish is rated "Insufficient Reliable Evidence To Rate" for Respiratory tract infections.

The evidence supporting this blend is sparse. Oregon grape is rated possibly effective for psoriasis, but the data for its use in upper respiratory conditions is not established in our records.

For the other active ingredients — elecampane, yarrow, horseradish, stinging nettle, wild bergamot, and thyme — the evidence for respiratory or immune support is insufficient or not rated in the data we hold. Before relying on this product for a specific condition, talk with your pharmacist about what the research actually shows.

The evidence, ingredient by ingredient Oregon Grape Elecampane Yarrow Horseradish Stinging Nettle Horsemint Thyme

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 7 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 7 of 7.
  • General safety write-ups exist for 7 of 7.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oregon grape should be avoided in pregnancy and while breastfeeding because berberine (its active compound) may pass to infants. Elecampane is also rated likely unsafe in pregnancy and breastfeeding; it can cause allergic reactions and stomach upset, and large doses may cause vomiting, diarrhea, or spasms.

Yarrow is traditionally avoided in pregnancy and should also be avoided while breastfeeding due to insufficient safety data. Stinging nettle and wild bergamot lack clear pregnancy/breastfeeding ratings in our data, so talk with your doctor if you're pregnant or nursing.

Thyme is rated likely safe in pregnancy and breastfeeding at food amounts, but medicinal doses aren't well studied. Common side effects vary by ingredient: Oregon grape may cause itching or burning topically; elecampane can trigger allergic contact dermatitis; yarrow may cause dermatitis; horseradish in large amounts can cause gastrointestinal upset and bloody vomiting; stinging nettle may cause constipation or diarrhea; and thyme might cause allergic reactions, nausea, heartburn, or dizziness.

If you have allergies to ragweed, chrysanthemums, or other plants in the daisy family, use caution with elecampane and yarrow.

Side effects, ingredient by ingredient Oregon Grape Elecampane Yarrow Horseradish Stinging Nettle Horsemint Thyme

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 7 matched ingredients can interact with medications — Elecampane, Yarrow, Horseradish, Oregon Grape, Stinging Nettle, among others.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications; lithium.
  • For scale: 1,339 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.

Check whether you take any blood-sugar-lowering drugs (diabetes medications), blood thinners or antiplatelet drugs (warfarin, aspirin), drugs that lower blood pressure, CNS depressants (sleep aids, anxiety meds), lithium, estrogen replacement, thyroid hormone, diuretics (water pills), cyclosporine, anticholinergic or cholinergic drugs, or any medications metabolized by liver enzymes — Oregon grape can raise levels of many common drugs by slowing how your liver breaks them down. If you do, run them through the checker before you start.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This blend carries significant interaction risks, especially with blood thinners, diabetes drugs, blood pressure medications, lithium, and thyroid hormone. It's not suitable for pregnancy or breastfeeding.

Before starting, check your medications against the tool on this page — if you take any prescriptions, it's worth a pharmacist conversation first.

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

Assessment coverage: 7 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated May 24, 2023.

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 Upper Respiratory Support, straight from the product label.

Brand Wise Woman Herbals
Barcode (UPC) 748840003538
Net contents 2 Fluid Ounce(s); 60 mL
Market status On market
Date entered into DSLD May 24, 2023
DSLD ID 284953
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years)
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 Upper Respiratory Support by Wise Woman Herbals, 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:
30 Drop(s)
Maximum serving Sizes:
60 Drop(s)
Servings per container
20
UPC/BARCODE
748840003538
IngredientAmount% DV
Proprietary Blend3 mL--
Oregon Grape0 NP--
Elecampane0 NP--
Yarrow0 NP--
Horseradish0 NP--
Stinging Nettle0 NP--
Wild Bergamot0 NP--
Thyme0 NP--

Other ingredients: Alcohol, spring Water, Glycerine

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.
Suggested/Recommended/Usage/Directions

Suggested use: Add 30-60 drops to water, 2-4 times per day.

Formulation

The presence of particulate matter in this product is normal.

Organic alcohol: 47-57%

Botanical formula

Precautions

Caution: Keep out of the reach of children.

FDA Statement of Identity

Dietary Supplement

Storage

Store in a cool, dry area away from direct sunlight with the lid tightly sealed.

Formula

Organic alcohol: 47-57%

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

See for yourself

Upper Respiratory Support by Wise Woman Herbals label

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

Upper Respiratory Support 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 Upper Respiratory Support by Wise Woman Herbals

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

Serving size30 Drop(s) Dosage formLiquid Servings per container20 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.

Proprietary Blend

3 mL per serving

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

Interaction report

Upper Respiratory Support by Wise Woman Herbals Drug Interactions

Want to check YOUR meds against Upper Respiratory Support?

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
1,338Drugs
1,338 Moderate

Ingredients driving the most interactions

Oregon Grape 1,218
Thyme 379
Elecampane 248
Stinging Nettle 164
Horseradish 16

Individual Drug Interactions

The ingredients in Upper Respiratory Support interact with 1,338 drugs. Click any drug to see the details.

6 of the 7 ingredients in Upper Respiratory Support interact with drugs. Each result below shows which ingredient is responsible. Oregon Grape Thyme Elecampane Stinging Nettle Horseradish Yarrow

Each ingredient & the kinds of drugs it affects

For each ingredient in Upper Respiratory Support 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.

Oregon Grape9 drug types · 1,218 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, Oregon grape might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro and in vivo research suggests that berberine, a constituent of Oregon grape, can inhibit platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, Oregon grape might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Clinical research suggests that berberine, a constituent of Oregon grape, can lower blood glucose levels.

Likelihood Possible Evidence A
Antihypertensive Drugs

Theoretically, Oregon grape might increase the risk of hypotension when taken with antihypertensive drugs.
Animal research suggests that berberine, a constituent of Oregon grape, can have hypotensive effects. Also, an analysis of clinical evidence suggests that taking berberine in combination with amlodipine (Norvasc) can lower systolic and diastolic blood pressure when compared with taking amlodipine alone.

Likelihood Possible Evidence D
Cns Depressants

Theoretically, Oregon grape might increase the sedative effects of CNS depressants.
Animal research suggests that berberine, a constituent of Oregon grape, can have sedative effects.

Likelihood Possible Evidence D
Cyclosporine (Neoral, Sandimmune)

Theoretically, Oregon grape might increase the effects and adverse effects of cyclosporine.
Berberine, a constituent of Oregon grape, can reduce metabolism of cyclosporine and increase serum levels. It might inhibit cytochrome P450 3A4 (CYP3A4), which metabolizes cyclosporine.

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

Theoretically, Oregon grape might increase serum levels of drugs metabolized by CYP2C9.
Preliminary clinical evidence suggests that berberine, a constituent of Oregon grape, can inhibit cytochrome P450 2C9 (CYP2C9).

Likelihood Possible Evidence B
Cytochrome P450 2D6 (Cyp2D6) Substrates

Theoretically, Oregon grape might increase serum levels of drugs metabolized by CYP2D6.
In vitro research and preliminary clinical evidence suggest that berberine, a constituent of Oregon grape, can inhibit cytochrome P450 2D6 (CYP2D6).

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

Theoretically, Oregon grape might increase serum levels of drugs metabolized by CYP3A4.
In vitro research and preliminary clinical evidence suggest that berberine, a constituent of Oregon grape, moderately inhibits cytochrome P450 3A4 (CYP3A4).

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, Oregon grape might increase serum levels of drugs that are P-glycoprotein (P-gp) substrates.
In vitro research suggests that Oregon grape extracts inhibit P-gp efflux.

Likelihood Possible Evidence D
Oregon Grape full monograph & interactions

Thyme4 drug types · 379 drugs

Anticholinergic Drugs

Theoretically, concurrent use of anticholinergic drugs and thyme essential oil might reduce the effects of anticholinergic drugs.
In vitro evidence suggests that thyme essential oil and specific essential oil constituents like thymohydroquinone and carvacrol can inhibit acetylcholinesterase (AChE). However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, thyme leaf extract might have additive effects with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that thyme leaf extract has antiplatelet effects. However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Cholinergic Drugs

Theoretically, concurrent use of cholinergic drugs and thyme essential oil might cause additive cholinergic effects.
In vitro evidence suggests that thyme essential oil and specific essential oil constituents like thymohydroquinone and carvacrol can inhibit acetylcholinesterase (AChE). However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Estrogens

Theoretically, thyme might competitively inhibit the effects of estrogen replacement therapy.
In vitro research shows that thyme has estrogen receptor-binding activity and phytoestrogen content. However, this effect has not been observed in humans.

Likelihood Possible Evidence D
Thyme full monograph & interactions

Elecampane1 drug type · 248 drugs

Cns Depressants

Theoretically, elecampane may cause additive sedative effects when taken with CNS depressants.
Elecampane might have sedative effects.

Likelihood Possible Evidence D
Elecampane full monograph & interactions

Stinging Nettle4 drug types · 164 drugs

Antidiabetes Drugs

Theoretically, stinging nettle might have additive effects with antidiabetes drugs.
Clinical research shows that stinging nettle might decrease blood glucose levels in patients with diabetes.

Likelihood Possible Evidence B
Diuretic Drugs

Theoretically, combining stinging nettle with diuretic drugs may have additive effects.
Animal research suggests that the above ground parts and roots of stinging nettle may have a diuretic effect.

Likelihood Possible Evidence D
Lithium

Theoretically, stinging nettle might reduce excretion and increase levels of lithium.
Animal research suggests that stinging nettle has diuretic and natriuretic properties, which could alter the excretion of lithium. The dose of lithium might need to be decreased.

Likelihood Possible Evidence D
Warfarin (Coumadin)

There is some concern that stinging nettle might decrease the effects of anticoagulant drugs such as warfarin.
Stinging nettle contains a significant amount of vitamin K. When taken in large quantities, this might interfere with the activity of warfarin.

Likelihood Possible Evidence D
Stinging Nettle full monograph & interactions

Horseradish1 drug type · 16 drugs

Thyroid Hormone

Theoretically, horseradish might interfere with the effects of thyroid hormone.
Horseradish and other members of the cabbage and mustard family are associated with depressed thyroid function.

Likelihood Possible Evidence D
Horseradish full monograph & interactions

Yarrow1 drug type · 1 drug

Lithium

Theoretically, taking yarrow with lithium might increase the levels and adverse effects of lithium.
Animal research shows that yarrow has diuretic activity. Theoretically, due to these potential diuretic effects, yarrow might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Yarrow full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Upper Respiratory Support, from the product label.

Wise Woman Herbals

See all Wise Woman Herbals products
Name
Wise Woman Herbals
City
Creswell
State
OR
ZipCode
97426
Phone Number
541.895.5152
Web Address
wisewomanherbals.com
Pharmacist Counseling Corner

Upper Respiratory Support by Wise Woman Herbals: Common Questions

Does Upper Respiratory Support by Wise Woman Herbals interact with any medications?
Yes. Based on its ingredients, Upper Respiratory Support has a known interaction with 1,338 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Upper Respiratory Support 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 or breastfeeding?
No — multiple ingredients should be avoided. Oregon grape, elecampane, yarrow, and stinging nettle are not recommended in pregnancy or while breastfeeding. Horseradish is not well studied at medicinal doses in pregnancy. Thyme is likely safe at food amounts, but the blend contains concentrated herbal extracts. Talk with your doctor before taking any of this product if you're pregnant or nursing.
What's berberine, and why does it matter for interactions?
Berberine is the main active compound in Oregon grape. It's what makes Oregon grape interact with so many medications — it slows your liver's ability to clear certain drugs, raises blood sugar meds' effects, lowers blood pressure further, and can increase bleeding risk with blood thinners. If Oregon grape is a concern for your medications, berberine is the reason.
Does this product actually work for colds or respiratory infections?
The evidence isn't established in our data. Most of the ingredients — elecampane, yarrow, horseradish, and thyme — are rated as having insufficient reliable evidence for respiratory conditions. Oregon grape is possibly effective for psoriasis, but not for upper respiratory use. You may want to ask your pharmacist what the research actually supports.
Can I take this with warfarin or other blood thinners?
Stinging nettle contains vitamin K and may reduce warfarin's effect. Oregon grape may increase bleeding risk. Thyme also has moderate interactions with blood thinners. This combination makes it risky — talk with your pharmacist or doctor before starting.
What side effects should I watch for?
The most common are gastrointestinal upset (nausea, diarrhea, heartburn) and allergic reactions. Yarrow and elecampane can cause skin rashes, especially if you're sensitive to ragweed or daisy-family plants. Horseradish in large amounts can cause vomiting or diarrhea. If you notice any rash, stomach pain, or unusual symptoms, stop and contact your pharmacist.
Why does this product interact with so many medications?
Oregon grape contains berberine, which inhibits several liver enzymes (CYP2D6, CYP2C9, and CYP3A4) that break down many common medications. When your liver clears drugs more slowly, their levels build up in your blood, which can strengthen both beneficial and harmful effects. Several other ingredients also have diuretic or enzyme-affecting properties.

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.

Upper Respiratory Support label
Go deeper

The Full Monographs Behind Upper Respiratory Support’s Ingredients

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

Herb & supplement monograph

Oregon Grape

Interacts with 1,218 drugs

Oregon grape is a shrub whose root contains berberine and related compounds. The strongest (though still modest) evidence is for topical creams that may slightly ease psoriasis; evidence for...

Read the full Oregon Grape monograph → Herb & supplement monograph

Elecampane

Interacts with 248 drugs

Elecampane is a traditional herb used mainly for coughs and other respiratory complaints, and as a bitter for digestion. Modern human evidence is very limited, so it should be seen as a folk...

Read the full Elecampane monograph → Herb & supplement monograph

Yarrow

Interacts with 1 drug

Yarrow is a traditional herb long used for wounds, digestive complaints, and colds, but high-quality human studies are very limited, so its benefits are not well proven. It is generally used...

Read the full Yarrow monograph → Herb & supplement monograph

Horseradish

Interacts with 16 drugs

Horseradish is a pungent root used as a food and folk remedy, most often for sinus congestion and urinary tract complaints. Human evidence is limited, and while culinary amounts are generall...

Read the full Horseradish monograph → Herb & supplement monograph

Stinging Nettle

Interacts with 164 drugs

Stinging nettle is a common plant used as food and in traditional medicine, most often for prostate symptoms, allergies, and joint pain. The evidence is mixed and mostly preliminary, so it i...

Read the full Stinging Nettle monograph → Herb & supplement monograph

Horsemint

Horsemint (Monarda punctata) is an aromatic North American mint used traditionally as a tea or essential oil for digestive and respiratory complaints. Strong human research is lacking, so it...

Read the full Horsemint monograph → Herb & supplement monograph

Thyme

Interacts with 379 drugs

Thyme is a common kitchen herb that has long been used for coughs, sore throats, and digestive complaints. It is generally safe in the amounts found in food, and some cough products that com...

Read the full Thyme monograph →
Sources

Sources & How We Checked

Upper Respiratory Support'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 82 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.

Oregon Grape 21 references
  1. Wiesenauer M, Lydtke R. Mahonia aquifolium in patients with Psoriasis vulgaris; an intraindividual study. Phytomedicine 1996;3:231-5.
  2. Chan E. Displacement of bilirubin from albumin by berberine. Biol Neonate 1993;63:201-8. PubMed
  3. Janbaz KH, Gilani AH. Studies on preventive and curative effects of berberine on chemical-induced hepatotoxicity in rodents. Fitoterapia 2000;71:25-33.. PubMed
  4. Wu X, Li Q, Xin H, Yu A, Zhong M. Effects of berberine on the blood concentration of cyclosporin A in renal transplanted recipients: clinical and pharmacokinetic study. Eur J Clin Pharmacol 2005;61:567-72. PubMed
  5. Gulliver WP, Donsky HJ. A report on three recent clinical trials using Mahonia aquifolium 10% topical cream and a review of the worldwide clinical experience with Mahonia aquifolium for the treatment of plaque psoriasis. Am J Ther 2005;12:398-406. PubMed
  6. Zhang Y, Li X, Zou D, et al. Treatment of type 2 diabetes and dyslipidemia with the natural plant alkaloid berberine. J Clin Endocrinol Metab 2008;93:2559-65. PubMed
  7. Budzinski JW, Foster BC, Vandenhoek S, Arnason JT. An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine 2000;7:273-82. PubMed
  8. Chatterjee P, Franklin MR. Human cytochrome p450 inhibition and metabolic-intermediate complex formation by goldenseal extract and its methylenedioxyphenyl components. Drug Metab Dispos 2003;31:1391-7. PubMed
  9. Shanbhag, S. M., Kulkarni, H. J., and Gaitonde, B. B. Pharmacological actions of berberine on the central nervous system. Jpn.J Pharmacol 1970;20(4):482-487. PubMed
  10. Wu, J. F. and Liu, T. P. [Effects of berberine on platelet aggregation and plasma levels of TXB2 and 6-keto-PGF1 alpha in rats with reversible middle cerebral artery occlusion]. Yao Xue.Xue.Bao. 1995;30(2):98-102.
  11. Peng, W. H., Hsieh, M. T., and Wu, C. R. Effect of long-term administration of berberine on scopolamine-induced amnesia in rats. Jpn J Pharmacol 1997;74(3):261-266. DOI
  12. Sabir M and Bhide NK. Study of some pharmacological actions of berberine. Ind J Physiol & Pharmac 1971;15(3):111-132.
  13. Tripathi YB and Shukla SD. Berberis artistata inhibits PAF induced aggregation of rabbit platelets. Phytotherapy Research 1996;10:628-630.
  14. Yin, J., Xing, H., and Ye, J. Efficacy of berberine in patients with type 2 diabetes mellitus. Metabolism 2008;57(5):712-717. PubMed
  15. Zhang, H., Wei, J., Xue, R., Wu, J. D., Zhao, W., Wang, Z. Z., Wang, S. K., Zhou, Z. X., Song, D. Q., Wang, Y. M., Pan, H. N., Kong, W. J., and Jiang, J. D. Berberine lowers blood glucose in type 2 diabetes mellitus patients through increasing insulin re
  16. Guo, Y., Chen, Y., Tan, Z. R., Klaassen, C. D., and Zhou, H. H. Repeated administration of berberine inhibits cytochromes P450 in humans. Eur J Clin Pharmacol 2012;68(2):213-217. PubMed
  17. Wei, W., Zhao, H., Wang, A., Sui, M., Liang, K., Deng, H., Ma, Y., Zhang, Y., Zhang, H., and Guan, Y. A clinical study on the short-term effect of berberine in comparison to metformin on the metabolic characteristics of women with polycystic ovary syndro
  18. Hermann, R. and von, Richter O. Clinical evidence of herbal drugs as perpetrators of pharmacokinetic drug interactions. Planta Med 2012;78(13):1458-1477. PubMed
  19. Chun YT, Yip TT, Lau KL, and et al. A biochemical study on the hypotensive effect of berberine in rats. Gen Pharmac 1979;10:177-182. PubMed
  20. Lan J, Zhao Y, Dong F, et al. Meta-analysis of the effect and safety of berberine in the treatment of type 2 diabetes mellitus, hyperlipemia and hypertension. J Ethnopharmacol. 2015;161:69-81. PubMed
  21. Fan Y, Zhou Z, Zhang L. Effect of Oregon grape root extracts on P-glycoprotein mediated transport in in vitro cell lines. J Pharm Pharm Sci 2024;26:11927. PubMed

See these in context on the Oregon Grape monograph →

Elecampane 5 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 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. Lamminpaa A, Estlander T, Jolanki R, Kanerva L. Occupational allergic contact dermatitis caused by decorative plants. Contact Dermatitis 1996;34:330-5. PubMed
  4. Pazzaglia, M., Venturo, N., Borda, G., and Tosti, A. Contact dermatitis due to a massage liniment containing Inula helenium extract. Contact Dermatitis 1995;33(4):267.
  5. Aalto-Korte, K., Alanko, K., Kuuliala, O., and Jolanki, R. Late reactions in patch tests: a 4-year review from a clinic of occupational dermatology. Contact Dermatitis 2007;56(2):81-86. PubMed

See these in context on the Elecampane monograph →

Yarrow 8 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. Uter, W., Nohle, M., Randerath, B., and Schwanitz, H. J. Occupational contact urticaria and late-phase bronchial asthma caused by compositae pollen in a florist. Am J Contact Dermat. 2001;12(3):182-184. DOI
  3. Schempp, C. M., Schopf, E., and Simon, J. C. [Plant-induced toxic and allergic dermatitis (phytodermatitis)]. Hautarzt 2002;53(2):93-97.
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Horseradish 6 references
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Horsemint 1 reference
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Thyme 18 references
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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.

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