Major interaction on record — check this product against your medications before combining. Check your meds →
Dietary supplement

MG-W Ingredients & Drug Interactions

by Pure Herbs

MG-W label
See full label image
Liquid Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking MG-W 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: Major

MG-W is a dietary supplement by Pure Herbs with 5 active ingredients. Its ingredients are commonly taken for high cholesterol, digestive complaints, menopausal symptoms.Based on those ingredients, 1,549 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Chamomile Flower Extract, Alfalfa Leaf, Seed Extract, Gotu Kola Aerial Parts Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against MG-W by Pure Herbs

Ask about any prescription or over-the-counter medication and we check it for interactions with MG-W by Pure Herbs — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of MG-W by Pure Herbs

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 Aug 20, 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 (1,998 mg) without saying how much of each component you get.
  • “Dulse Leaf Extract” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.

MG-W contains 7 ingredients, including a proprietary blend and six herbal extracts: alfalfa leaf and seed extract, licorice root extract, ginger root extract, chamomile flower extract, gotu kola aerial parts extract, sarsaparilla root extract, and gentian root extract. The product has no inactive ingredients listed other than the liquid form itself.

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: supports healthy adrenal and thyroid function.
  • We looked for evidence on: Adrenal insufficiency, Addison disease, thyroid dysfunction, hormonal balance.
  • The closest evidence on file: Licorice is rated "Insufficient Reliable Evidence To Rate" for Addison disease (Natural Medicines).
  • Also on file: Licorice is rated "Insufficient Reliable Evidence To Rate" for Adrenal insufficiency.

The evidence for most uses of these herbs is limited or absent in the data we hold. Licorice is possibly effective for eczema and canker sores.

Ginger is possibly effective for pregnancy-related nausea and vomiting and for menstrual cramps (dysmenorrhea), and possibly ineffective for exercise-induced muscle soreness and chemotherapy-induced nausea. Gotu kola is possibly effective for venous insufficiency and burns, though possibly ineffective for cognitive function.

For the other conditions the ingredients are marketed for—alfalfa for blood sugar and cholesterol, chamomile for anxiety and hay fever, sarsaparilla for cancer and arthritis, and gentian for wound healing and stomach upset—the evidence is either insufficient or not established in our data.

The evidence, ingredient by ingredient Alfalfa German Chamomile Gotu Kola Gentian Dulse

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 7 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.

Alfalfa is generally well tolerated as food in small amounts, but supplements carry real risks; most common side effects are abdominal discomfort, diarrhea, and gas. Rarely, chronic use has been linked to a lupus-like syndrome, and dermatitis has been reported.

Licorice is well tolerated in food amounts but high doses or long-term use can cause serious problems due to its active compound glycyrrhizin; common side effects include headache, nausea, and vomiting. Ginger is generally well tolerated; doses above 5 grams daily increase the risk of side effects like heartburn, diarrhea, and a burning sensation in the mouth and throat.

Chamomile is well tolerated by most adults but can trigger allergic reactions in people sensitive to ragweed; it may cause allergic dermatitis topically. Gotu kola is generally well tolerated short-term, though a small number of cases of liver toxicity have been reported; common side effects are gastric irritation and nausea.

Sarsaparilla has limited human safety data for supplements; occupational exposure to the dust can cause asthma and nasal symptoms. Gentian is generally tolerated in small amounts but can upset the stomach; gastrointestinal intolerance (nausea, vomiting, diarrhea, bloating) has been reported in trial participants.

Alfalfa and licorice are advised against in pregnancy due to estrogen-like effects and linked harmful effects, respectively. Chamomile, gotu kola, sarsaparilla, and gentian lack enough safety data in pregnancy—talk with your doctor.

Ginger is likely safe to possibly safe in pregnancy, often used for morning sickness, but check with your doctor first. For breastfeeding, licorice, sarsaparilla, and gentian should be avoided due to insufficient data; ginger is likely safe; and alfalfa and chamomile should be discussed with your doctor or pharmacist.

Side effects, ingredient by ingredient Alfalfa German Chamomile Gotu Kola Gentian Dulse

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 7 of the 7 matched ingredients can interact with medications — Alfalfa, Sarsaparilla, Gentian, Gotu Kola, Licorice, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications; heart-rhythm medications; lithium.
  • For scale: 1,529 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 doctor or pharmacist if you take blood thinners (warfarin, phenprocoumon, or antiplatelet drugs), heart or blood pressure medications (digoxin, nifedipine, losartan, loop diuretics), diabetes medications, cancer drugs (cisplatin, paclitaxel, or drugs metabolized by liver enzymes), sedatives or sleep aids, hormonal contraceptives or estrogen therapy, lithium, or any drugs metabolized by your liver's cytochrome P450 system.

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. Major medication interactions have been identified, and safety information is well characterized.

This is a multi-herb liquid with a long list of documented interactions, especially with blood thinners, heart medications, diabetes drugs, and hormonal contraceptives. It's not suitable for anyone on warfarin without careful medical review.

If you take any prescription or over-the-counter medications, especially for your heart, blood sugar, hormones, or blood clotting, talk with your doctor or pharmacist before starting this product—use the interaction checker on this page to look up your exact medications 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 Nov 22, 2022.

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 MG-W, straight from the product label.

Brand Pure Herbs
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Nov 22, 2022
DSLD ID 279950
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
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 MG-W by Pure Herbs, 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:
2 mL
Maximum serving Sizes:
2 mL
Servings per container
15
IngredientAmount% DV
Proprietary Blend1998 mg--
Alfalfa Leaf, Seed Extract0 NP--
Licorice Root Extract0 NP--
Ginger Root Extract0 NP--
Chamomile Flower Extract0 NP--
Gotu Kola Aerial Parts Extract0 NP--
Sarsaparilla Root Extract0 NP--
Gentian Root Extract0 NP--
Dulse Leaf Extract0 NP--

Other ingredients: None

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

Directions: For adults, mix 2 mL (abt. 1/2 tsp) of extract in 2 fl. oz (60 mL) water one time daily preferably with a meal.

Shake well before use

Formulation

Provides nourishment that supports healthy adrenal gland function. Provides nourishment that supports healthy thyroid function.

FDA Disclaimer Statement

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

Precautions

Warning: Not intended for use by pregnant or nursing women except under supervision.

Not for use with hypertension, liver disorders, edema, severe kidney insufficiency, low blood potassium, heart disease with edema, or congestive heart failure. Not for prolonged use or in high doses except under supervision. Discontinue use and consult with your doctor if any adverse reactions occur.

Keep out of reach of children

Brand IP Statement(s)

Pure Herbs, Ltd. Natural Herbal Extracts

FDA Statement of Identity

Dietary Supplement

General Statements

"No expense has been spared to provide the finest nature has to offer."

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

See for yourself

MG-W by Pure Herbs label

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

MG-W 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 MG-W by Pure Herbs

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 mL Dosage formLiquid Servings per container15 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: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

MG-W by Pure Herbs Drug Interactions

Want to check YOUR meds against MG-W?

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
1,549Drugs
2 Major 1,530 Moderate 17 Minor

Ingredients driving the most interactions

Chamomile Flower Extract 960
Alfalfa Leaf, Seed Extract 583
Gotu Kola Aerial Parts Extract 579
Gentian Root Extract 172
Dulse Leaf Extract 85

Individual Drug Interactions

The ingredients in MG-W interact with 1,549 drugs. Click any drug to see the details.

5 of the 5 ingredients in MG-W interact with drugs. Each result below shows which ingredient is responsible. Chamomile Flower Extract Alfalfa Leaf, Seed Extract Gotu Kola Aerial Parts Extract Gentian Root Extract Dulse Leaf Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in MG-W 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.

Chamomile Flower Extract9 drug types · 960 drugs

Cns Depressants

Theoretically, German chamomile might have additive effects when used with CNS depressants.
German chamomile has mild sedative effects. Theoretically, concomitant use with drugs with sedative properties can cause additive effects and side effects.

Likelihood Possible Evidence D
Contraceptive Drugs

Theoretically, large amounts of German chamomile might reduce the effectiveness of oral contraceptives.
In vitro, German chamomile has demonstrated antiestrogenic activity. Theoretically, concomitant use of large amounts of German chamomile might interfere with contraceptive drugs through competition for estrogen receptors.

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

Theoretically, German chamomile might inhibit CYP2C9 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP2C9. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP2C9 in patients taking German chamomile.

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

Theoretically, German chamomile might inhibit CYP2D6 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP2D6. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP2D6 in patients taking German chamomile.

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

Theoretically, German chamomile might inhibit CYP3A4 and increase levels of drugs metabolized by these enzymes.
In vitro evidence shows that German chamomile might inhibit CYP3A4. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP3A4 in patients taking German chamomile.

Likelihood Possible Evidence D
Estrogens

Theoretically, large amounts of German chamomile might reduce the effectiveness of estrogens.
In vitro, German chamomile has demonstrated antiestrogenic activity. Theoretically, large amounts of German chamomile might interfere with hormone replacement therapy through competition for estrogen receptors.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, large amounts of German chamomile might interfere with the activity of tamoxifen.
In vitro, German chamomile has demonstrated antiestrogenic activity.

Likelihood Possible Evidence D
Warfarin (Coumadin)

German chamomile might increase the effects of warfarin and increase the risk of bleeding.
In one case, a 70-year-old female taking warfarin developed retroperitoneal hematoma and bilateral recti muscle bleeding along with an INR of 7.9 following ingestion of German chamomile tea 4-5 cups daily and use of a topical chamomile-based lotion applied 4-5 times daily.

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

Theoretically, German chamomile might inhibit CYP1A2 and increase levels of drugs metabolized by these enzymes.
In vitro and animal research shows that German chamomile might inhibit CYP1A2. So far, this interaction has not been reported in humans. However, there might be an increase in the levels of drugs metabolized by CYP1A2 in patients taking German chamomile.

Likelihood Possible Evidence D
Chamomile Flower Extract full monograph & interactions

Alfalfa Leaf, Seed Extract6 drug types · 583 drugs

Warfarin (Coumadin)

Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Alfalfa contains a large amount of vitamin K. This could theoretically interfere with the activity of warfarin.

Likelihood Probable Evidence D
Antidiabetes Drugs

Theoretically, alfalfa might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that alfalfa decreases blood sugar in diabetic mice. Also, in one case report, a diabetic patient experienced hypoglycemia after consuming alfalfa extract. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Contraceptive Drugs

Theoretically, alfalfa might interfere with the activity of contraceptive drugs.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.

Likelihood Possible Evidence D
Estrogens

Theoretically, alfalfa might interfere with hormone therapy.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
In vitro research and human case reports suggest that alfalfa may have immunostimulant effects.

Likelihood Possible Evidence D
Photosensitizing Drugs

Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Animal research suggests that excessive doses of alfalfa may increase photosensitivity, possibly due to its chlorophyll content. It is unclear if this effect would be clinically relevant in humans.

Likelihood Possible Evidence D
Alfalfa Leaf, Seed Extract full monograph & interactions

Gotu Kola Aerial Parts Extract2 drug types · 579 drugs

Cns Depressants

Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
In vitro research suggests that gotu kola may have sedative effects via binding of GABA receptors.

Likelihood Possible Evidence D
Hepatotoxic Drugs

Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
There are at least four case reports of hepatotoxicity associated with the use of gotu kola. However, more information is needed to determine if gotu kola was the causative factor in these cases.

Likelihood Possible Evidence D
Gotu Kola Aerial Parts Extract full monograph & interactions

Gentian Root Extract1 drug type · 172 drugs

Antihypertensive Drugs

Theoretically, taking gentian with antihypertensive drugs might increase the risk of hypotension.
In vitro research shows that gentian can cause vasodilation and lower blood pressure.

Likelihood Possible Evidence D
Gentian Root Extract full monograph & interactions

Dulse Leaf Extract7 drug types · 85 drugs

Amiodarine (Cordarone)

Theoretically, combining dulse with amiodarone might cause excessively high iodine levels.
Dulse is rich in iodine, and amiodarone contains 37.3% iodine and can increase iodine levels.

Likelihood Possible Evidence D
Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.
Dulse is rich in iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history.

Likelihood Possible Evidence D
Digoxin (Lanoxin)

Theoretically, dulse might increase the risk of hyperkalemia when taken with digoxin.
Dulse is rich in potassium, and digoxin can increase potassium levels in the blood. This interaction has not been demonstrated in humans.

Likelihood Possible Evidence D
Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.
Dulse is rich in iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Although dulse has been associated with a statistically significant increase in thyroid stimulating hormone (TSH) levels in clinical research, clinically significant increases have not been documented.

Likelihood Possible Evidence D
Ace Inhibitors (Aceis)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ACEIs.
Dulse is rich in potassium. ACEIs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels. However, using these drugs while consuming dulse in quantities that provide larger amounts of potassium daily might increase the risk of hyperkalemia. Additionally, in vitro research suggests that dulse protein hydrolysates inhibit the activity of ACE. However, these effects have not been demonstrated in humans.

Likelihood Possible Evidence D
Angiotensin Receptor Blockers (Arbs)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ARBs.
Dulse is rich in potassium. ARBs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels. However, using these drugs while consuming dulse in quantities that provide higher amounts of potassium daily might increase the risk of hyperkalemia. Additionally, in vitro research suggests that dulse protein hydrolysates inhibit the activity of angiotensin converting enzyme (ACE). However, these effects have not been demonstrated in humans.

Likelihood Possible Evidence D
Potassium-Sparing Diuretics

Theoretically, dulse might increase the risk of hyperkalemia when taken with potassium-sparing diuretics.
Dulse is rich in potassium, and potassium-sparing diuretics can increase potassium levels in the blood. This interaction has not been shown in humans.

Likelihood Possible Evidence D
Dulse Leaf Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for MG-W, from the product label.

Pure Herbs

See all Pure Herbs products
Name
Pure Herbs, Ltd.
City
Sterling Heights
State
MI
Phone Number
(800) 860-4372
Web Address
www.pureherbs.com
Pharmacist Counseling Corner

MG-W by Pure Herbs: Common Questions

Does MG-W by Pure Herbs interact with any medications?
Yes. Based on its ingredients, MG-W has a known interaction with 1,549 medications, including 2 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
MG-W contains 5 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 during pregnancy?
No. Alfalfa and licorice should be avoided in pregnancy—alfalfa has estrogen-like activity and licorice has been linked to harmful effects. Chamomile, gotu kola, sarsaparilla, and gentian don't have enough safety data, so they should also be avoided unless your doctor says otherwise. Ginger is the only ingredient with better data (likely to possibly safe), but even ginger should be discussed with your doctor first.
Can I take this while breastfeeding?
It depends on the ingredient. Ginger appears likely safe for breastfeeding. Alfalfa and chamomile should be discussed with your doctor or pharmacist since data are limited. Licorice, sarsaparilla, and gentian should be avoided while breastfeeding due to insufficient safety information.
What side effects might I notice?
The most common ones are gastrointestinal: abdominal discomfort, diarrhea, gas, nausea, and heartburn. Ginger at high doses may cause a burning sensation in your mouth and throat. Chamomile and alfalfa can trigger allergic reactions in sensitive people. Dermatitis has been reported with alfalfa and chamomile. Rarely, chronic alfalfa use and gotu kola have been linked to more serious effects (lupus-like syndrome and liver toxicity, respectively).
Does this product actually work for what it claims?
The evidence is limited. Licorice has some support for eczema and canker sores. Ginger may help with pregnancy-related nausea and menstrual cramps. Gotu kola appears possibly effective for venous insufficiency and burns. For the other uses—blood sugar, cholesterol, anxiety, arthritis, cancer, and stomach upset—we either have insufficient evidence or none at all in our data.
Why are there so many drug interactions?
These six herbs contain compounds that either slow down or speed up how your liver breaks down many medications, alter hormone levels, thin the blood, lower blood pressure, or affect blood sugar. Even one herb can affect multiple drug types; together, they span a large range of common and specialized medications.
What is gotu kola used for in this product?
Gotu kola aerial parts extract is included, likely for its possible benefits to blood vessels and wound healing. However, the evidence for most other uses (cognitive function, anxiety, Alzheimer disease) is either insufficient or not established in our data. It's also been linked to liver concerns in a small number of cases, though quality data are limited.

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.

MG-W label
Go deeper

The Full Monographs Behind MG-W’s Ingredients

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

Herb & supplement monograph

Alfalfa

Interacts with 583 drugs

Alfalfa is a nutrient-rich legume that people use for high cholesterol, menopause symptoms, and general wellness, but solid human evidence for most of these uses is limited. It is best avoid...

Read the full Alfalfa monograph → Herb & supplement monograph

German Chamomile

Interacts with 960 drugs

German chamomile is a widely used herbal remedy taken mainly as a tea for calming, sleep, and digestive complaints. Early research suggests possible benefits for mild anxiety and some skin o...

Read the full German Chamomile monograph → Herb & supplement monograph

Gotu Kola

Interacts with 579 drugs

Gotu kola is a traditional Ayurvedic and Asian herb that people use for wound healing, circulation, skin problems, and as a calming or memory-supporting herb. Some early studies suggest poss...

Read the full Gotu Kola monograph → Herb & supplement monograph

Gentian

Interacts with 172 drugs

Gentian is a very bitter root traditionally used to stimulate appetite and ease mild digestive complaints, often as part of "bitters" before meals. The evidence is mostly traditional and pre...

Read the full Gentian monograph → Herb & supplement monograph

Dulse

Interacts with 85 drugs

Dulse is a red seaweed eaten as a food in many coastal cultures and is a natural source of iodine, potassium, protein, and antioxidant compounds. As a food it is generally considered safe fo...

Read the full Dulse monograph →
Sources

Sources & How We Checked

MG-W'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 234 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.

Alfalfa 32 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  3. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  4. Kurzer MS, Xu X. Dietary phytoestrogens. Annu Rev Nutr 1997;17:353-81. PubMed
  5. Farber JM, Carter AO, Varughese PV, et al. Listeriosis traced to the consumption of alfalfa tablets and soft cheese [Letter to the Editor]. N Engl J Med 1990;322:338. PubMed
  6. Molgaard J, von Schenck H, Olsson AG. Alfalfa seeds lower low density lipoprotein cholesterol and apolipoprotein B concentrations in patients with type II hyperlipoproteinemia. Atherosclerosis 1987;65:173-9. PubMed
  7. Light TD, Light JA. Acute renal transplant rejection possibly related to herbal medications. Am J Transplant 2003;3:1608-9. PubMed
  8. Prete PE. The mechanism of action of L-canavanine in inducing autoimmune phenomena. Arthritis Rheum 1985;28:1198-200. PubMed
  9. Alcocer-Varela J, Iglesias A, Llorente L, Alarcon-Segovia D. Effects of L-canavanine on T cells may explain the induction of systemic lupus erythematosus by alfalfa. Arthritis Rheum 1985;28:52-7. PubMed
  10. Roberts JL, Hayashi JA. Exacerbation of SLE associated with alfalfa ingestion. N Engl J Med 1983;308:1361. DOI
  11. Feingold, R. M. Should we fear "health foods"? Arch Intern Med 7-12-1999;159(13):1502. PubMed
  12. Taormina, P. J., Beuchat, L. R., and Slutsker, L. Infections associated with eating seed sprouts: an international concern. Emerg.Infect.Dis 1999;5(5):626-634. PubMed
  13. Backer, H. D., Mohle-Boetani, J. C., Werner, S. B., Abbott, S. L., Farrar, J., and Vugia, D. J. High incidence of extra-intestinal infections in a Salmonella Havana outbreak associated with alfalfa sprouts. Public Health Rep. 2000;115(4):339-345. PubMed
  14. Mohle-Boetani J, Werner B, Polumbo M, and et al. From the Centers for Disease Control and Prevention. Alfalfa sprouts-- Arizona, California, Colorado, and New Mexico, February-April, 2001. JAMA 2-6-2002;287(5):581-582.
  15. Howard, M. B. and Hutcheson, S. W. Growth dynamics of Salmonella enterica strains on alfalfa sprouts and in waste seed irrigation water. Appl.Environ.Microbiol. 2003;69(1):548-553.
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See these in context on the Licorice monograph →

Ginger 64 references
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German Chamomile 15 references
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Gotu Kola 18 references
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Sarsaparilla 3 references
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Gentian 5 references
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Dulse 5 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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