Interactions on record — worth a quick check against your medications. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Irish Seamoss Ingredients & Drug Interactions

by Country Farms

Capsule Category: Botanical
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Irish Seamoss is a dietary supplement by Country Farms with 3 active ingredients. Its ingredients are commonly taken for skin conditions like acne and eczema, digestive support, diuretic ('detox') and blood purifier.Based on those ingredients, 891 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bladderwrack, Burdock. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Irish Seamoss by Country Farms

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

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 3 active ingredients.
  • “Proprietary Blend” is a proprietary blend — the label gives one combined amount (500 mg) without saying how much of each component you get.

Irish Seamoss by Country Farms contains three active ingredients: burdock, bladderwrack (also called fucus vesiculosus), and Irish Sea Moss. The first two are delivered as a proprietary blend, so you won't see a breakdown of how much of each is in every capsule.

The product also contains inactive ingredients—hypromellose (a capsule material) and bamboo leaf and shoot extract (a filler).

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 beautiful skin and helps cleanse detoxify.
  • We looked for evidence on: Acne, Aging skin, Atopic dermatitis (eczema), Dry skin, Wound healing, skin health — and 2 related terms.
  • The closest evidence on file: Burdock is rated "Insufficient Reliable Evidence To Rate" for Acne (Natural Medicines).
  • Also on file: Burdock is rated "Insufficient Reliable Evidence To Rate" for Aging skin, Atopic dermatitis (eczema), Dry skin.
  • Also on file: Fucus Vesiculosus is rated "Insufficient Reliable Evidence To Rate" for Aging skin, Wound healing.

The evidence backing these ingredients is limited. Burdock has insufficient reliable evidence for acne, aging skin, breast cancer, common cold, and atopic dermatitis (eczema).

Bladderwrack likewise shows insufficient reliable evidence for aging skin, cardiovascular disease, constipation, diarrhea, and indigestion. We hold no effectiveness data for Irish Sea Moss itself.

If you're considering this product for any particular health goal, talk it over with your doctor or pharmacist about what the science actually shows.

The evidence, ingredient by ingredient Burdock Fucus Vesiculosus

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Burdock is generally well tolerated when eaten as food and used short-term by healthy adults, but human safety data are sparse. Rare serious allergic reactions including anaphylaxis have been reported, as has contact dermatitis, especially with prolonged use of the root oil.

There's also one reported case of liver injury in someone taking an herbal detox tea containing burdock and other ingredients, though it's unclear which ingredient caused it. Burdock should be avoided during pregnancy due to lack of safety data and possible effects on the uterus, and should not be used medicinally while breastfeeding.

Bladderwrack carries more significant safety concerns. Its high iodine content can disrupt thyroid function and the plant may concentrate heavy metals.

It's unsafe during pregnancy and should be avoided while breastfeeding because iodine passes into breast milk and may harm the baby's thyroid. The most common side effects are goiter, hyperthyroidism, and hypothyroidism.

Rare serious effects include thyroid cancer. One case reported palpitations and fainting after taking a weight-loss supplement containing bladderwrack, though it's unclear if bladderwrack alone was responsible.

Side effects, ingredient by ingredient Burdock Fucus Vesiculosus

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?
  • 2 of the 2 matched ingredients can interact with medications — Burdock, Fucus Vesiculosus.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; lithium.
  • For scale: 892 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 lithium—concomitant use can cause hyperthyroidism. Also watch out for antithyroid drugs, thyroid hormone replacements, and amiodarone, which may interact with bladderwrack's iodine content.

If you're on blood thinners or antiplatelet drugs, those should be discussed too. No interactions are documented for the liver enzymes we checked, but theoretically bladderwrack might affect how certain drugs are processed.

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.

If you take lithium, antithyroid drugs, thyroid hormone, amiodarone, blood thinners, or antiplatelet drugs, you should check with your doctor or pharmacist before taking this product. The evidence for what this supplement actually does is limited.

Because bladderwrack's iodine content poses real risks—especially if you have thyroid disease or take thyroid medication—talk it over with your own healthcare provider first.

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

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 22, 2024.

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 Irish Seamoss, straight from the product label.

Brand Country Farms
Barcode (UPC) 035046132835
Net contents 90 Capsule(s)
Market status On market
Date entered into DSLD Mar 22, 2024
DSLD ID 308025
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Sugar 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 Irish Seamoss by Country Farms, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
90
UPC/BARCODE
035046132835
IngredientAmount% DV
Proprietary Blend500 mg--
Burdock0 NP--
Bladderwrack0 NP--
Irish Sea Moss0 NP--

Other ingredients: Hypromellose, Bamboo Leaf, Shoot Extract

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.
Formulation

Gluten free Sugar free

Extra strength

Supports beautiful skin Helps cleanse & detoxify Increases metabolism

Made in the U.S.A. from globally sourced ingredients.

Precautions

Keep out of reach of children.

Do not use if inner seal is broken.

Contains: Fish & shellfish.

Storage

Store in a cool, dry place. Protect from heat, light and moisture.

FDA Disclaimer Statement

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

Formula

Bladderwrack & Burdock Root

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: Take 1 capsule up to 2 times daily as a dietary supplement or directed by your healthcare provider.

General Statements

Facebook Instagram @CountryFarmsFresh

Seals/Symbols

Produced in a GMP Certified facility

See for yourself

Irish Seamoss by Country Farms label

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

What’s inside

The Ingredients in Irish Seamoss by Country Farms

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container90 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

500 mg per serving

Other (inactive) ingredients: Hypromellose, Bamboo Leaf, Shoot Extract. These complete the product’s ingredient list but are not active constituents.

Interaction report

Irish Seamoss by Country Farms Drug Interactions

Want to check YOUR meds against Irish Seamoss?

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.

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891Drugs
145 Moderate 746 Minor

Ingredients driving the most interactions

Burdock 122

Each ingredient & the kinds of drugs it affects

For each ingredient in Irish Seamoss 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.

Bladderwrack9 drug types · 891 drugs

Amiodarone (Cordarone)

Theoretically, combining Fucus vesiculosus with amiodarone might cause excessively high iodine levels.
Fucus vesiculosus contains high concentrations of iodine. Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use might increase the risk of having excessive iodine levels and adversely affecting thyroid function. Monitor thyroid function.

Likelihood Probable Evidence D
Antithyroid Drugs

Due to its iodine content, Fucus vesiculosus might alter the effects of antithyroid drugs.
Fucus vesiculosus contains high concentrations of iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using antithyroid drugs could alter the effects of the antithyroid drugs.

Likelihood Possible Evidence D
Lithium

Concomitant use of Fucus vesiculosus and lithium has resulted in hyperthyroidism.
There is a case of hyperthyroidism occurring in a patient taking Fucus vesiculosus and lithium. Monitor thyroid hormones closely in patients taking lithium and Fucus vesiculosus concomitantly.

Likelihood Possible Evidence D
Thyroid Hormone

Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.
Fucus vesiculosus contains high concentrations of iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using thyroid hormone could alter the effects of thyroid hormone.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, taking Fucus vesiculosus with antiplatelet or anticoagulant drugs might increase the risk of bruising and bleeding.
In vitro evidence suggests that a constituent of Fucus vesiculosus, known as fucoidan, has anticoagulant effects. However, in clinical research, fucoidan does not seem to have significant anticoagulant activity when taken orally, possibly due to poor absorption.

Likelihood Unlikely Evidence D
Cytochrome P450 2C8 (Cyp2C8) Substrates

Theoretically, concomitant use of Fucus vesiculosus with CYP2C8 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C8. This interaction has not been reported in humans.

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

Theoretically, concomitant use of Fucus vesiculosus with CYP2C9 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C9. This interaction has not been reported in humans.

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

Theoretically, concomitant use of Fucus vesiculosus with CYP2D6 substrates might alter the effects of these substrates.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, both inhibits and induces CYP2D6. This interaction has not been reported in humans.

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

Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP3A4. This interaction has not been reported in humans.

Likelihood Possible Evidence D

Burdock1 drug type · 122 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, taking burdock with anticoagulant or antiplatelet drugs might increase the risk of bleeding.

In vitro research shows that lignans from burdock reduce rabbit platelet aggregation by inhibiting platelet activating factor. This interaction has not been reported in humans.

Likelihood Possible Evidence D
The maker

Brand information

Manufacturer and brand details for Irish Seamoss, from the product label.

Country Farms

Name
Windmill Health Products
Street Address
10 Henderson Drive
City
West Caldwell
State
NJ
ZipCode
07006
Web Address
CountryFarms.com
Pharmacist Counseling Corner

Irish Seamoss by Country Farms: Common Questions

Does Irish Seamoss by Country Farms interact with any medications?
Yes. Based on its ingredients, Irish Seamoss has a known interaction with 891 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Irish Seamoss contains 3 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.
Can I take this if I have thyroid disease?
Bladderwrack has high iodine content and can disrupt thyroid function, causing both hyperthyroidism and hypothyroidism depending on your history. This is a real concern if you have any thyroid condition. Talk with your doctor or pharmacist before taking it.
Is this safe during pregnancy?
No. Burdock should be avoided during pregnancy due to lack of safety data and possible effects on the uterus. Bladderwrack is possibly unsafe in pregnancy because of its high iodine and possible heavy metal content. Don't take this product if you're pregnant without talking to your doctor first.
Can I take this while breastfeeding?
Not without medical advice. Burdock shouldn't be used medicinally while breastfeeding due to insufficient safety data. Bladderwrack should be avoided because iodine passes into breast milk and may affect your baby's thyroid. Check with your doctor or pharmacist.
What is burdock in this supplement?
Burdock is a plant root used traditionally in herbal medicine. In this product it's part of the proprietary blend, so you won't see the exact amount per capsule.
What does bladderwrack do?
Bladderwrack is a seaweed high in iodine. The evidence for what it actually does is insufficient—we have no reliable data showing it helps aging skin, heart health, constipation, diarrhea, or indigestion.
Are there any side effects I should watch for?
Burdock is generally well tolerated but rare allergic reactions including anaphylaxis can occur. Bladderwrack's main side effects are thyroid-related: goiter, hyperthyroidism, and hypothyroidism. Contact dermatitis has been reported with burdock, especially with prolonged use.

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

Not sure if Irish Seamoss is safe with your meds?

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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.

Irish Seamoss label
Sources

Sources & How We Checked

Irish Seamoss'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 26 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.

Burdock 11 references
  1. Iwakami S, Wu JB, Ebizuka Y, Sankawa U. Platelet activating factor (PAF) antagonists contained in medicinal plants: lignans and sesquiterpenes. Chem Pharm Bull (Tokyo) 1992;40:1196-8. PubMed
  2. Sasaki Y, Kimura Y, Tsunoda T, Tagami H. Anaphylaxis due to burdock. Int J Dermatol 2003;42:472-3. PubMed
  3. Rhoads PM, Tong TG, Banner W Jr, Anderson R. Anticholinergic poisonings associated with commercial burdock root tea. J Toxicol Clin Toxicol 1984-85;22:581-4. PubMed
  4. Rodriguez P, Blanco J, Juste S, et al. Allergic contact dermatitis due to burdock (Arctium lappa). Contact Dermatitis 1995;33:134-5.
  5. Kassler, W. J., Blanc, P., and Greenblatt, R. The use of medicinal herbs by human immunodeficiency virus-infected patients. Arch Intern Med 1991;151(11):2281-2288. DOI
  6. Chan, Y. S., Cheng, L. N., Wu, J. H., Chan, E., Kwan, Y. W., Lee, S. M., Leung, G. P., Yu, P. H., and Chan, S. W. A review of the pharmacological effects of Arctium lappa (burdock). Inflammopharmacology. 2011;19(5):245-254. PubMed
  7. Breed, F. B. and Kuwabara, T. Burdock ophthalmia. Arch Ophthalmol 1966;75(1):16-20.
  8. Bryson, P. D., Watanabe, A. S., Rumack, B. H., and Murphy, R. C. Burdock root tea poisoning. Case report involving a commercial preparation. JAMA 5-19-1978;239(20):2157. DOI
  9. <p>Fletcher GF<span>, </span>Cantwell JD. Burdock root tea poisoning. JAMA <span>1978 Oct 6;240(15):1586.</span></p> DOI
  10. Latif A, Fichadiya H, Abid F, Capo G. Herbal Teas and Thrombocytopenia: A Curious Case of Yellow Dock and Burdock-Induced Thrombocytopenia. Eur J Case Rep Intern Med 2022;9(3):003247. PubMed
  11. Niazi B, Ahmed K, Ahmed M, Ali S, Song K, Elias S. Drug-Induced Liver Injury from Herbal Liver Detoxification Tea. Case Rep Gastroenterol 2022;16(3):612-617. PubMed

See these in context on the Burdock monograph →

Fucus Vesiculosus 15 references
  1. Goodman GA, Rall TW, Nies AS, Taylor P. The Pharmacological Basis of Therapeutics, 9th ed.
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
  3. Phaneuf D, Cote I, Dumas P, et al. Evaluation of the contamination of marine algae (Seaweed) from the St. Lawrence River and likely to be consumed by humans. Environ Res 1999;80:S175-S182. PubMed
  4. Durig J, Bruhn T, Zurborn KH, et al. Anticoagulant fucoidan fractions from Fucus vesiculosus induce platelet activation in vitro. Thromb Res 1997;85:479-91. PubMed
  5. Conz PA, La Greca G, Benedetti P, et al. Fucus vesiculosus: a nephrotoxic alga? Nephrol Dial Transplant 1998;13:526-7.
  6. Ohye H, Fukata S, Kanoh M, et al. Thyrotoxicosis caused by weight-reducing herbal medicines. Arch Intern Med 2005;165:831-4. PubMed
  7. Okamura K, Inoue K, Omae T. A case of Hashimoto's thyroiditis with thyroid immunological abnormality manifested after habitual ingestion of seaweed. Acta Endocrinol (Copenh) 1978;88:703-12. PubMed
  8. Agarwal SC, Crook JR, Pepper CB. Herbal remedies -- how safe are they? A case report of polymorphic ventricular tachycardia/ventricular fibrillation induced by herbal medication used for obesity. Int J Cardiol 2006;106:260-1. PubMed
  9. Sterling JB, Heymann WR. Potassium iodide in dermatology: a 19th century drug for the 21st century-uses, pharmacology, adverse effects, and contraindications. J Am Acad Dermatol 2000;43:691-7. PubMed
  10. Catania, M. A., Oteri, A., Caiello, P., Russo, A., Salvo, F., Giustini, E. S., Caputi, A. P., and Polimeni, G. Hemorrhagic cystitis induced by an herbal mixture. South.Med.J. 2010;103(1):90-92. PubMed
  11. Cumashi, A., Ushakova, N. A., Preobrazhenskaya, M. E., D'Incecco, A., Piccoli, A., Totani, L., Tinari, N., Morozevich, G. E., Berman, A. E., Bilan, M. I., Usov, A. I., Ustyuzhanina, N. E., Grachev, A. A., Sanderson, C. J., Kelly, M., Rabinovich, G. A., I
  12. Irhimeh, M. R., Fitton, J. H., and Lowenthal, R. M. Pilot clinical study to evaluate the anticoagulant activity of fucoidan. Blood Coagul.Fibrinolysis 2009;20(7):607-610. PubMed
  13. Arbaizar, B. and Llorca, J. [Fucus vesiculosus induced hyperthyroidism in a patient undergoing concomitant treatment with lithium]. Actas Esp.Psiquiatr. 2011;39(6):401-403.
  14. Church FC, Meade JB, Treanor RE, and et al. Antithrombin activity of fucoidan. The interaction of fucoidan with heparin cofactor II, antithrombin III, and thrombin. J Biol Chem 2-25-1989;264(6):3618-3623. DOI
  15. Mathew L, Burney M, Gaikwad A, et al. Preclinical evaluation of safety of fucoidan extracts from Undaria pinnatifida and Fucus vesiculosus for use in cancer treatment. Integr Cancer Ther 2017;16(4):572-84.

See these in context on the Fucus Vesiculosus monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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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