Interactions on record — worth a quick check against your medications. Based on 5 of 6 ingredients. Check your meds →
Dietary supplement

Irish Seamoss Liquid Ingredients & Drug Interactions

by Country Farms

Irish Seamoss Liquid label
See full label image
Liquid Category: Botanical With Nutrients
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 Irish Seamoss Liquid 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

Irish Seamoss Liquid is a dietary supplement by Country Farms with 6 active ingredients. Its ingredients are commonly taken for hair growth and thinning hair, brittle nails, skin health.Based on those ingredients, 950 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bladderwrack, Vitamin D, Burdock. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Irish Seamoss Liquid by Country Farms

Ask about any prescription or over-the-counter medication and we check it for interactions with Irish Seamoss Liquid by Country Farms — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Irish Seamoss Liquid 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

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 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 2 of its 5 active ingredients.
  • “Proprietary Sea Moss Extract” is a proprietary blend — the label gives one combined amount (1,600 mg) without saying how much of each component you get.

This liquid supplement contains 5 active ingredients: biotin, vitamin D, Irish moss (sea moss), burdock, and a proprietary sea moss extract blend. Biotin is a B vitamin that supports hair, skin, and nail health.

Vitamin D aids calcium absorption and bone health. Irish moss and bladderwrack are seaweeds rich in minerals and iodine.

Burdock is an herbal root traditionally used in wellness formulas. The product also contains inactive ingredients — glycerin, purified water, citric acid, natural flavors, potassium sorbate, steviol glycosides (a natural sweetener), and sodium benzoate (a preservative) — to provide texture, taste, and shelf stability.

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 skin health and cleansing.
  • We looked for evidence on: Acne, Aging skin, Atopic dermatitis (eczema), Brittle nails, Dry skin, detoxification — and 1 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: Biotin is rated "Insufficient Reliable Evidence To Rate" for Brittle nails.

The evidence varies by ingredient and intended use. Biotin is likely effective for biotin deficiency, but for other uses like multiple sclerosis or seborrheic dermatitis, the evidence suggests it's possibly ineffective; for alopecia areata there isn't enough reliable evidence to rate it.

Vitamin D is effective for familial hypophosphatemia, osteomalacia, renal bone disease, rickets, and hypoparathyroidism — conditions involving bone and calcium metabolism. For the other ingredients — Irish moss, burdock, and bladderwrack — the evidence we hold is insufficient to rate their effectiveness for fatigue, muscle strength, chronic pain, quality of life, iodine deficiency, aging skin, acne, or digestive health.

This doesn't mean they don't work; it means robust clinical trials are lacking in our data.

The evidence, ingredient by ingredient Biotin Vitamin D Sea Moss 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 5 of the 5 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 5 of 5.
  • General safety write-ups exist for 5 of 5.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Biotin is generally well tolerated, even at fairly high doses, because your body removes excess through urine; however, high-dose biotin rarely causes mild diarrhea, so check with your doctor before taking high-dose supplements. Vitamin D is generally safe at recommended doses but can cause toxicity at very high doses over time — symptoms include high blood calcium, bone loss, and eye problems.

Vitamin D is likely safe in pregnancy and lactation at recommended amounts, though use only under your doctor's guidance. Irish moss is likely safe in pregnancy and lactation according to the safety data, but it contains variable iodine and may concentrate heavy metals, which warrants caution.

Burdock is likely safe as a food and for short-term use in healthy adults, but medicinal amounts should be avoided in pregnancy and breastfeeding due to lack of safety data. Bladderwrack is possibly unsafe in pregnancy and should be avoided during breastfeeding because iodine passes into breast milk and may affect the baby's thyroid; it can cause goiter, hyperthyroidism, or hypothyroidism because of its high iodine content.

Side effects, ingredient by ingredient Biotin Vitamin D Sea Moss 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?
  • 4 of the 5 matched ingredients can interact with medications — Burdock, Fucus Vesiculosus, Vitamin D, Sea Moss.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications; lithium.
  • For scale: 951 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, check with your doctor or pharmacist if you take any of these: lithium (moderate interaction with bladderwrack — thyroid function must be monitored closely), antithyroid drugs, thyroid hormone replacements, amiodarone, heart rhythm medications like verapamil or diltiazem, digoxin, thiazide diuretics, atorvastatin, blood thinners or antiplatelet drugs, or any medication broken down by CYP3A4, CYP2D6, or CYP2C9 enzymes. These are the medication types with documented interactions in our data.

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 product combines biotin, vitamin D, and three iodine-rich herbs. It may appeal to someone looking to support hair, skin, nails, and general wellness, but the herbs in particular carry iodine concerns and documented interactions with thyroid and heart medications.

If you take any prescription drug — especially thyroid medication, blood thinners, lithium, amiodarone, heart rhythm drugs, or cholesterol medications — talk with your doctor or pharmacist before starting this product.

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

Assessment coverage: 5 of 5 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 Liquid, straight from the product label.

Brand Country Farms
Barcode (UPC) 035046134280
Net contents 2 Fluid Ounce(s); 60 Milliliter(s)
Market status On market
Date entered into DSLD Mar 22, 2024
DSLD ID 307974
Product type Botanical With Nutrients
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
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 Irish Seamoss Liquid 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:
2 mL
Maximum serving Sizes:
2 mL
Servings per container
30
UPC/BARCODE
035046134280
IngredientAmount% DV
Calories5 Calorie(s)--
Biotin30 mg100%
Carbohydrates1 Gram(s)1%
Vitamin D20 mcg100%
Irish Moss0 NP--
Burdock0 NP--
Bladderwrack0 NP--
Proprietary Sea Moss Extract1600 mg--

Other ingredients: Glycerin, Water, Purified, Citric Acid, Natural Flavors, Potassium Sorbate, Steviol Glycosides, Sodium Benzoate

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: Take 2 droppers (2 mL) daily as a dietary supplement or directed by your healthcare provider. Can be taken directly by mouth or added to water.

Brand IP Statement(s)

Country Farms Farm Fresh Since 1975

Formula

Bladderwrack & Burdock root

Formulation

Supports beautiful skin Helps cleanse & detoxify Increases metabolism

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

FDA Statement of Identity

Dietary Supplement

Precautions

Contains: Fish & shellfish

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

See for yourself

Irish Seamoss Liquid by Country Farms label

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

Irish Seamoss Liquid 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 Irish Seamoss Liquid by Country Farms

These are the 6 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 mL Dosage formLiquid Servings per container30 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.

Biotin

No known
interactions
30 mg per serving

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...

Biotin monograph & interactions

Carbohydrates

1 Gram(s) per serving

Vitamin D

Interacts with
715 drugs
20 mcg per serving Form: Cholecalciferol

Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and is important for healthy bones, muscles, and immune function. Many people,...

Vitamin D monograph & interactions

Proprietary Sea Moss Extract

1600 mg per serving

Other (inactive) ingredients: Glycerin, Water, Purified, Citric Acid, Natural Flavors, Potassium Sorbate, Steviol Glycosides, Sodium Benzoate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Irish Seamoss Liquid by Country Farms Drug Interactions

Want to check YOUR meds against Irish Seamoss Liquid?

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
950Drugs
221 Moderate 729 Minor

Ingredients driving the most interactions

Bladderwrack 891
Vitamin D 715
Burdock 122
Irish Moss 22

Individual Drug Interactions

The ingredients in Irish Seamoss Liquid interact with 950 drugs. Click any drug to see the details.

4 of the 6 ingredients in Irish Seamoss Liquid interact with drugs. Each result below shows which ingredient is responsible. Bladderwrack Vitamin D Burdock Irish Moss

Each ingredient & the kinds of drugs it affects

For each ingredient in Irish Seamoss Liquid 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
Bladderwrack full monograph & interactions

Vitamin D8 drug types · 715 drugs

Aluminum

Vitamin D might increase aluminum absorption and toxicity, but this has only been reported in people with renal failure.
The protein that transports calcium across the intestinal wall can also bind and transport aluminum. This protein is stimulated by vitamin D, which may therefore increase aluminum absorption. This mechanism may contribute to increased aluminum levels and toxicity in people with renal failure, when they take vitamin D and aluminum-containing phosphate binders chronically.

Likelihood Probable Evidence B
Atorvastatin (Lipitor)

Vitamin D might reduce absorption of atorvastatin.
A small, low-quality clinical study shows that taking vitamin D reduces levels of atorvastatin and its active metabolites by up to 55%. However, while atorvastatin levels decreased, total cholesterol, low-density lipoprotein (LDL) cholesterol, and high-density lipoprotein (HDL) cholesterol levels did not substantially change. Atorvastatin is metabolized in the gut by CYP3A4 enzymes, and researchers theorized that vitamin D might induce CYP3A4, causing reduced levels of atorvastatin. However, this proposed mechanism was not specifically studied.

Likelihood Probable Evidence B
Calcipotriene (Dovonex)

Taking calcipotriene with vitamin D increases the risk for hypercalcemia.
Calcipotriene is a vitamin D analog used topically for psoriasis. It can be absorbed in sufficient amounts to cause systemic effects, including hypercalcemia. Theoretically, combining calcipotriene with vitamin D supplements might increase the risk of hypercalcemia.

Likelihood Probable Evidence D
Digoxin (Lanoxin)

Theoretically, hypercalcemia induced by high-dose vitamin D can increase the risk of arrhythmia from digoxin.
High doses of vitamin D can cause hypercalcemia. Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and digoxin concurrently.

Likelihood Possible Evidence D
Diltiazem (Cardizem, Others)

Theoretically, hypercalcemia induced by high-dose vitamin D can reduce the therapeutic effects of diltiazem for arrhythmia.
High doses of vitamin D can cause hypercalcemia. Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically this could also occur with diltiazem. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and diltiazem concurrently.

Likelihood Probable Evidence B
Thiazide Diuretics

Theoretically, taking thiazide diuretics and high-dose vitamin D can increase the risk of hypercalcemia.
Thiazide diuretics decrease urinary calcium excretion, which could lead to hypercalcemia if vitamin D supplements are taken concurrently. This has been reported in people being treated with vitamin D for hypoparathyroidism, and also in elderly people with normal parathyroid function who were taking a thiazide, vitamin D, and calcium-containing antacids daily.

Likelihood Probable Evidence D
Verapamil (Calan, Others)

Hypercalcemia induced by high-dose vitamin D can reduce the therapeutic effects of verapamil for arrhythmia.
Hypercalcemia due to high doses of vitamin D can reduce the effectiveness of verapamil in atrial fibrillation. Avoid vitamin D doses above the tolerable upper intake level (4000 IU daily for adults) and monitor serum calcium levels in people taking vitamin D and verapamil concurrently.

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

Vitamin D might induce CYP3A4 enzymes and reduce the bioavailability of CYP3A4 substrates.
There is some concern that vitamin D might induce CYP3A4. In vitro research suggests that vitamin D induces CYP3A4 transcription. Additionally, observational research has found that increased UV light exposure and serum vitamin D levels are associated with decreased serum levels of CYP3A4 substrates such as tacrolimus and sirolimus, while no association between UV light exposure or vitamin D levels and levels of mycophenolic acid, a non-CYP3A4 substrate, was found. A small, low-quality clinical study shows that taking vitamin D reduces levels of the CYP3A4 substrate atorvastatin and its active metabolites by up to 55%; however, the clinical effects of atorvastatin were not reduced. While researchers theorized that vitamin D might induce CYP3A4, this proposed mechanism was not specifically studied.

Likelihood Possible Evidence D
Vitamin D full monograph & interactions

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
Burdock full monograph & interactions

Irish Moss3 drug types · 22 drugs

Amiodarone (Cordarone)

Theoretically, combining sea moss with amiodarone might cause excessively high iodine levels.
Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use with sea moss, which contains approximately 4-7 mcg of iodine per gram, might increase the risk of adverse effects from iodine, including altered thyroid function.

Likelihood Possible Evidence D
Antithyroid Drugs

Due to its iodine content, sea moss might alter the effects of antithyroid drugs.
Sea moss contains approximately 4-7 mcg of iodine per gram. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking sea moss could theoretically alter the effects of antithyroid drugs.

Likelihood Possible Evidence D
Thyroid Hormone

Due to its iodine content, sea moss might alter the effects of thyroid hormone.
Sea moss contains approximately 4-7 mcg of iodine per gram. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking sea moss could theoretically alter the effects of thyroid hormone.

Likelihood Possible Evidence D
Irish Moss full monograph & interactions
The maker

Brand information

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

Country Farms

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

Irish Seamoss Liquid by Country Farms: Common Questions

Does Irish Seamoss Liquid by Country Farms interact with any medications?
Yes. Based on its ingredients, Irish Seamoss Liquid has a known interaction with 950 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Irish Seamoss Liquid contains 6 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?
The data on file shows mixed safety information. Biotin and Irish moss are likely safe in pregnancy at normal amounts, but burdock should be avoided in pregnancy due to lack of safety data and possible effects on the uterus. Bladderwrack is possibly unsafe in pregnancy because of its excess iodine and potential heavy metal content. Talk with your doctor or pharmacist about your specific situation before taking this product while pregnant.
Can I take this while breastfeeding?
Biotin and Irish moss appear likely safe during lactation, but burdock and bladderwrack should be avoided. Bladderwrack is especially concerning because iodine passes into breast milk and may affect your baby's thyroid function. Check with your doctor or pharmacist before starting this product if you are breastfeeding.
What does biotin actually do in this product?
Biotin is a B vitamin that supports hair, skin, and nail health. It's likely effective if you have a biotin deficiency, but for other uses like hair loss or skin conditions, the evidence in our data suggests it's probably not effective or there isn't enough evidence yet.
Does this product help with fatigue or energy?
Irish moss, burdock, and bladderwrack are sometimes promoted for fatigue, but there isn't enough reliable evidence in our data to rate whether they actually work for that purpose. Biotin and vitamin D are not intended for fatigue support.
Is this safe to take long-term?
Biotin is generally well tolerated long-term. Vitamin D is safe at recommended doses but can cause toxicity at very high doses over extended periods. The herbal ingredients have limited long-term safety data — burdock is considered safe for short-term use in healthy adults, but ongoing use is less studied. Talk with your doctor about whether long-term use is right for you.
What happens if I take too much of this product?
High-dose biotin can rarely cause mild diarrhea. Very high doses of vitamin D over time can cause toxicity with symptoms including high blood calcium, bone loss, and eye problems. The iodine-containing herbs — Irish moss and bladderwrack — can cause thyroid problems like goiter or hyperthyroidism if iodine levels get too high. Stick to the recommended dose and talk with your doctor if you have concerns.

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.

Irish Seamoss Liquid label
Go deeper

The Full Monographs Behind Irish Seamoss Liquid’s Ingredients

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

Herb & supplement monograph

Biotin

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get plenty from a normal diet, and true defi...

Read the full Biotin monograph → Herb & supplement monograph

Vitamin D

Interacts with 715 drugs

Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and is important for healthy bones, muscles, and immune function. Many people, especially those with low sun exposure,...

Read the full Vitamin D monograph → Herb & supplement monograph

Sea Moss

Interacts with 22 drugs

Sea moss is a type of red seaweed that is naturally rich in iodine and several minerals, and it is popular as a 'whole-food' supplement. Strong human evidence for most of its health claims i...

Read the full Sea Moss monograph → Herb & supplement monograph

Burdock

Interacts with 122 drugs

Burdock is a traditional herb most often used for skin problems and as a so-called 'blood purifier,' but high-quality human studies are lacking and most claims are not well proven. It is wid...

Read the full Burdock monograph → Herb & supplement monograph

Fucus Vesiculosus

Interacts with 891 drugs

Fucus vesiculosus (bladderwrack) is a brown seaweed rich in iodine that has been used traditionally for thyroid concerns, weight, and skin. There is little solid human evidence to support mo...

Read the full Fucus Vesiculosus monograph →
Sources

Sources & How We Checked

Irish Seamoss Liquid'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 59 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.

Biotin 4 references
  1. Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
  3. Mock DM, Quirk JG, Mock NI. Marginal biotin deficiency during normal pregnancy. Am J Clin Nutr 2002;75:295-9. PubMed
  4. Sedel F, Papeix C, Bellanger A, Touitou V, Lebrun-Frenay C, Galanaud D, et al. High doses of biotin in chronic progressive multiple sclerosis: a pilot study.Mult Scler Relat Disord. 2015;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. PubMed

See these in context on the Biotin monograph →

Vitamin D 26 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Tatro DS, ed. Drug Interactions Facts. Facts and Comparisons Inc., St. Louis, MO. 1999.
  3. Koutkia P, Chen TC, Holick MF. Vitamin D intoxication associated with an over-the-counter supplement. N Engl J Med 2001;345:66-7. PubMed
  4. Bar-Or D, Yoel G. Calcium and calciferol antagonize effect of verapamil in atrial fibrillation. Br Med J 1981;282:1585-6.
  5. Demontis R, Leflon A, Fournier A, et al. 1 alpha(OH) vitamin D3 increases plasma aluminum in hemodialyzed patients taking AI(OH)3. Clin Nephrol 1986;26:146-9.
  6. Crowe M, Wollner L, Griffiths RA. Hypercalcemia following vitamin D and thiazide therapy in the elderly. Practitioner 1984;228:312-3.
  7. Parfitt AM. Thiazide-induced hypercalcemia in vitamin D-treated hypoparathyroidism. Ann Intern Med 1972;77:557-63. PubMed
  8. Thiazide diuretics and the risk of osteoporosis. Pharmacist's Letter/Prescriber's Letter 2003;19(11):191105.
  9. Moon J. The role of vitamin D in toxic metal absorption. J Am Coll Nutr 1994;13:559-64.
  10. Demontis R, Reissi D, Noel C, et al. Indirect clinical evidence that 1alphaOH vitamin D<SUB>3</SUB> increases the intestinal absorption of aluminum. Clin Nephrol 1989;31:123-7.
  11. Adler AJ, Berlyne GM. Duodenal aluminum absorption in the rat: effect of vitamin D. Am J Physiol 1985;249:G209-13. PubMed
  12. Schwartz JB. Effects of vitamin D supplementation in atorvastatin-treated patients: A new drug interaction with an unexpected consequence. Clin Pharmacol Ther 2009;85:198-203. PubMed
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Sea Moss 3 references
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Fucus Vesiculosus 15 references
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See these in context on the Fucus Vesiculosus monograph →

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

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