Liquid Iodine Ingredients & Drug Interactions
by Genestra Brands
What is this page for?
First and foremost: checking Liquid Iodine 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
Liquid Iodine is a dietary supplement by Genestra Brands with 3 active ingredients. Its ingredients are commonly taken for high cholesterol, digestive complaints, menopausal symptoms.Based on those ingredients, 631 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Alfalfa, Dulse, Iodine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Liquid Iodine by Genestra Brands
Ask about any prescription or over-the-counter medication and we check it for interactions with Liquid Iodine by Genestra Brands — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Liquid Iodine by Genestra Brands
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.
What’s inside
Full disclosure
Liquid Iodine contains three active ingredients. Alfalfa is a plant traditionally used in herbal medicine.
Iodine is an essential mineral critical for thyroid function and is added to prevent iodine deficiency and support thyroid health. Dulse is a type of seaweed also rich in iodine and minerals.
The product also contains glycerin and purified water as inactive ingredients.
Does it work?
Strong evidence
The evidence for alfalfa's effectiveness is not established in the data we hold—there is insufficient reliable evidence to rate it for any of the uses tracked, including diabetes, digestive upset, and high cholesterol. Iodine has stronger evidence: it's likely effective for preventing thyroid problems after radiation exposure and for correcting iodine deficiency, and it's possibly effective for oral mouth sores and gum disease.
Dulse's effectiveness is also not established in our data for any tracked use, including high cholesterol and iodine deficiency.
How safe is it?
Well-documented data
Alfalfa is generally well tolerated in small amounts, but the safety data advises against it in supplement doses during pregnancy because of its estrogen-like activity. When breastfeeding, there isn't enough reliable data, so it's best to avoid supplement doses.
Common side effects from alfalfa include abdominal discomfort, diarrhea, and gas; rarely, a lupus-like syndrome has been reported after long-term use. Iodine is well tolerated when taken in normal amounts, though high doses can cause thyroid problems.
During pregnancy, adequate iodine is important, but use only the amount your doctor advises and avoid high-dose products; during breastfeeding, some iodine is needed for your baby, but excess can pass into breast milk, so follow medical guidance. Common side effects include abdominal upset, diarrhea, headache, metallic taste, nausea, and thyroid changes.
Dulse is generally safe as a food but supplements may contain unpredictable levels of iodine and potassium; limited safety data exists for pregnancy and breastfeeding, so avoid supplement doses and check with your doctor.
Meds to double-check
Major interaction found
Before starting Liquid Iodine, double-check with your doctor or pharmacist if you take blood thinners (especially warfarin or Coumadin)—alfalfa may reduce their effectiveness. Also flag thyroid medications, antithyroid drugs, lithium, or amiodarone (Cordarone), since both iodine and dulse can alter thyroid function.
If you're on birth control, hormone therapy, immunosuppressants, diabetes drugs, or potassium-related blood pressure medications, those should be reviewed as well.
The bottom line
Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
Liquid Iodine is intended for iodine support and uses iodine's established role in preventing deficiency and protecting the thyroid after radiation exposure. However, because of alfalfa's blood-thinner interaction, iodine's effects on thyroid medications, and dulse's potassium content, this product requires careful review if you take blood thinners, thyroid drugs, heart medications, or blood pressure drugs.
Talk with your own doctor or pharmacist about whether this product is right for you and how it fits with your current medications.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2016.
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
General information
Key facts about Liquid Iodine, straight from the product label.
| Brand | Genestra Brands |
|---|---|
| Barcode (UPC) | 88319612420 |
| Net contents | 30 mL |
| Market status | On market |
| Date entered into DSLD | Jan 25, 2016 |
| DSLD ID | 55806 |
| Product type | Other Combinations |
| Supplement form | Liquid |
| Dietary claims / uses | All Other |
| Intended target group(s) | Children 4 or More Years of Age, Vegan, Vegetarian, Adult (18 - 50 Years), Dairy Free |
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 Liquid Iodine by Genestra Brands, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Alfalfa | 19.2 mcg | -- |
| Iodine | 150 mcg | -- |
| Dulse | 19.2 mcg | -- |
Other ingredients: Glycerin, purified Water
Tap any ingredient to jump to its full detail below.
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.
General
V1.0 210
FDA Statement of Identity
MINERAL SUPPLEMENT
General Statements
A factor in the maintenance of good health; helps in the function of the thyroid gland and helps to prevent iodine deficiency.
Seals/Symbols
Seroyal
Suggested/Recommended/Usage/Directions
Recommended Dose: Adults (19 years and older): Take one drop (0.05 ml) three times daily with meals or as recommended by your healthcare practitioner. Adolescents (12-18 years): Take one drop (0.05 ml) two times daily with meals or as recommended by your healthcare practitioner.
Precautions
Risk Information: If you are pregnant or breastfeeding; or if you have a history of systemic lupus erythematosus, do not use. If you are undergoing hormone replacement therapy (HRT); or if you are taking blood thinners or birth control medication, consult your healthcare practitioner prior to use.
Quality Assurance: Safety-sealed for your protection and for product freshness. Do not use if outer seal is missing or broken.
Formulation
Guaranteed to contain no added wheat, yeast, gluten, soy, sodium, sugar, artificial colouring or flavouring, antimicrobial preservatives, dairy or animal products.
Ideal for vegans.
Storage
Store in a cool, dry place.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Liquid Iodine by Genestra Brands label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Liquid Iodine by Genestra Brands
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size0.05 mL Dosage formLiquid 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.
Alfalfa
Interacts with583 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...
Alfalfa monograph & interactionsIodine
Interacts with7 drugs
Iodine is an essential mineral your body needs to make thyroid hormones, and most people get enough from iodized salt, dairy, and seafood. Supplements...
Iodine monograph & interactionsDulse
Interacts with85 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...
Dulse monograph & interactionsOther (inactive) ingredients: Glycerin, Purified Water. These complete the product’s ingredient list but are not active constituents.
Liquid Iodine by Genestra Brands Drug Interactions
HelloPharmacist Interaction Report
Liquid Iodine by Genestra Brands does interact with medications.
The product contains alfalfa, iodine, and dulse, and together these ingredients affect a substantial number of drugs. The single most serious concern is alfalfa's potential to reduce the blood-thinning effect of warfarin (Coumadin)—a Major-severity interaction—because alfalfa is high in vitamin K, which directly opposes warfarin's action.
Read the full breakdown — every affected drug type, severity by severity
Alfalfa also carries Moderate-severity interactions with photosensitizing drugs (drugs that increase sun sensitivity), birth control pills, hormone therapy, immunosuppressant medications, and diabetes drugs. Iodine presents Moderate interactions with lithium, antithyroid drugs, and amiodarone (Cordarone), chiefly because iodine and these drugs can interfere with thyroid function or accumulate to unsafe levels.
Dulse, which is rich in both iodine and potassium, shares concerns with thyroid and antithyroid drugs and amiodarone, and also interacts with digoxin (Lanoxin) and potassium-sparing blood pressure medications—though most of dulse's interactions are Minor or Moderate.
Altogether, these interactions span 631 individual medications. Because this product contains three active ingredients with overlapping and distinct interaction profiles, checking your exact medications with the tool on this page before starting is essential.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Liquid Iodine?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Liquid Iodine interact with 631 drugs. Click any drug to see the details.
3 of the 3 ingredients in Liquid Iodine interact with drugs. Each result below shows which ingredient is responsible. Alfalfa Dulse Iodine
WarfarinWarfarin
How Warfarin interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa + Warfarin interactionWarfarin SodiumCoumadin, Panwarfin, Sofarin
How Warfarin Sodium interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaWarfarin (coumadin) Major
Interaction Summary
Theoretically, alfalfa might reduce the anticoagulant activity of warfarin.
Read the full Alfalfa + Warfarin Sodium interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, alfalfa might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Read the full Alfalfa + Acarbose interactionAcepromazineAtravet
How Acepromazine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acepromazine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Ibuprofen interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetazolamide interactionAcetohexamideDymelor
How Acetohexamide interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs, Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acetohexamide interactionAcitretinSoriatane
How Acitretin interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, concomitant use of alfalfa with photosensitizing drugs might have additive effects.
Read the full Alfalfa + Acitretin interactionAdalimumabHumira
How Adalimumab interacts with Liquid Iodine — through 1 ingredient. Tap an ingredient for the detail:
AlfalfaImmunosuppressants Moderate
Interaction Summary
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
Read the full Alfalfa + Adalimumab interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Liquid Iodine 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.
Alfalfa
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.
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.
Contraceptive Drugs
Theoretically, alfalfa might interfere with the activity of contraceptive drugs.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.
Estrogens
Theoretically, alfalfa might interfere with hormone therapy.
Alfalfa contains coumestrol, a phytoestrogen, and isoflavonoids, which have estrogenic effects.
Immunosuppressants
Theoretically, alfalfa might decrease the efficacy of immunosuppressive therapy.
In vitro research and human case reports suggest that alfalfa may have immunostimulant effects.
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.
Dulse
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.
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.
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.
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.
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.
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.
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.
Iodine
Amiodarone (Cordarone)
Combining iodine with amiodarone might cause excessively high iodine levels.
Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use with iodine might increase the risk of having excessive iodine levels and adversely affecting thyroid function. Monitor thyroid function.
Antithyroid Drugs
Iodine might alter the effects of antithyroid drugs.
Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking iodine while using antithyroid drugs could alter the effects of the antithyroid drugs.
Lithium
Combining iodine with lithium might have additive hypothyroid effects.
Lithium can inhibit thyroid function. Several case reports suggest that concomitant use of lithium and potassium iodide can reduce thyroid function in otherwise healthy adults. Monitor thyroid function.
Brand information
Manufacturer and brand details for Liquid Iodine, from the product label.
Genestra Brands
- Name
- Seroyal International
- Street Address
- 490 Elgin Mills Rd E
- City
- Richmond Hill
- State
- ON
- ZipCode
- L4C 0L8
Liquid Iodine by Genestra Brands: Common Questions
Does Liquid Iodine by Genestra Brands interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is iodine safe during pregnancy?
What are the most common side effects of alfalfa in this product?
Can I take this if I'm on warfarin?
Does this product have any fillers?
Is iodine effective for iodine deficiency?
What is dulse and why is it in this product?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Liquid Iodine is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Liquid Iodine’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Alfalfa
Interacts with 583 drugsAlfalfa 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 monographIodine
Interacts with 7 drugsIodine is an essential mineral your body needs to make thyroid hormones, and most people get enough from iodized salt, dairy, and seafood. Supplements help when you are truly deficient, but...
Read the full Iodine monograph → Herb & supplement monographDulse
Interacts with 85 drugsDulse 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 & How We Checked
Liquid Iodine'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 63 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
- Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
- Kurzer MS, Xu X. Dietary phytoestrogens. Annu Rev Nutr 1997;17:353-81. PubMed
- 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
- 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
- Light TD, Light JA. Acute renal transplant rejection possibly related to herbal medications. Am J Transplant 2003;3:1608-9. PubMed
- Prete PE. The mechanism of action of L-canavanine in inducing autoimmune phenomena. Arthritis Rheum 1985;28:1198-200. PubMed
- 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
- Roberts JL, Hayashi JA. Exacerbation of SLE associated with alfalfa ingestion. N Engl J Med 1983;308:1361. DOI
- Feingold, R. M. Should we fear "health foods"? Arch Intern Med 7-12-1999;159(13):1502. PubMed
- 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
- 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
- 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.
- 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.
- Winthrop, K. L., Palumbo, M. S., Farrar, J. A., Mohle-Boetani, J. C., Abbott, S., Beatty, M. E., Inami, G., and Werner, S. B. Alfalfa sprouts and Salmonella Kottbus infection: a multistate outbreak following inadequate seed disinfection with heat and chl
- Strapp, C. M., Shearer, A. E., and Joerger, R. D. Survey of retail alfalfa sprouts and mushrooms for the presence of Escherichia coil O157:H7, Salmonella, and Listeria with BAX, and evaluation of this polymerase chain reaction-based system with experimen
- Akaogi, J., Barker, T., Kuroda, Y., Nacionales, D. C., Yamasaki, Y., Stevens, B. R., Reeves, W. H., and Satoh, M. Role of non-protein amino acid L-canavanine in autoimmunity. Autoimmun.Rev 2006;5(6):429-435. PubMed
- Burden and causes of foodborne disease in Australia: Annual report of the OzFoodNet network, 2005. Commun.Dis Intell. 2006;30(3):278-300.
- Shemesh, M., Lindner, H. R., and Ayalon, N. Affinity of rabbit uterine oestradiol receptor for phyto-oestrogens and its use in a competitive protein-binding radioassay for plasma coumestrol. J Reprod.Fertil. 1972;29(1):1-9. PubMed
- Elakovich, S. D. and Hampton, J. M. Analysis of coumestrol, a phytoestrogen, in alfalfa tablets sold for human consumption. J Agric.Food Chem. 1984;32(1):173-175. PubMed
- Malinow, M. R., Bardana, E. J., Jr., Pirofsky, B., Craig, S., and McLaughlin, P. Systemic lupus erythematosus-like syndrome in monkeys fed alfalfa sprouts: role of a nonprotein amino acid. Science 4-23-1982;216(4544):415-417. PubMed
- Malinow, M. R., McLaughlin, P., and Stafford, C. Alfalfa seeds: effects on cholesterol metabolism. Experientia 5-15-1980;36(5):562-564. PubMed
- Farnsworth, N. R. Alfalfa pills and autoimmune diseases. Am J Clin Nutr. 1995;62(5):1026-1028. DOI
- Herbert, V. and Kasdan, T. S. Alfalfa, vitamin E, and autoimmune disorders. Am J Clin Nutr 1994;60(4):639-640.
- Mahon, B. E., Ponka, A., Hall, W. N., Komatsu, K., Dietrich, S. E., Siitonen, A., Cage, G., Hayes, P. S., Lambert-Fair, M. A., Bean, N. H., Griffin, P. M., and Slutsker, L. An international outbreak of Salmonella infections caused by alfalfa sprouts grow
- Gray, A. M. and Flatt, P. R. Pancreatic and extra-pancreatic effects of the traditional anti- diabetic plant, Medicago sativa (lucerne). Br J Nutr. 1997;78(2):325-334.
- Van Beneden, C. A., Keene, W. E., Strang, R. A., Werker, D. H., King, A. S., Mahon, B., Hedberg, K., Bell, A., Kelly, M. T., Balan, V. K., Mac Kenzie, W. R., and Fleming, D. Multinational outbreak of Salmonella enterica serotype Newport infections due to
- Rubenstein AH, Levin NW, and Elliott GA. Manganese-induced hypoglycemia. Lancet 1962;1348-1351.
- Kaufman W. Alfalfa seed dermatitis. JAMA 1954;155(12):1058-1059. PubMed
- Ponka A, Andersson Y, Siitonen A, and et al. Salmonella in alfalfa sprouts. Lancet 1995;345:462-463. PubMed
- Puschner B, Chen X, Read D, Affolter VK. Alfalfa hay induced primary photosensitization in horses. Vet J. 2016 May;211:32-8. PubMed
Iodine 26 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Goodman GA, Rall TW, Nies AS, Taylor P. The Pharmacological Basis of Therapeutics, 9th ed.
- Ghent WR, Eskin BA, Low DA, Hill LP. Iodine replacement in fibrocystic disease of the breast. Can J Surg 1993;36:453-60.
- Potassium iodide for nuclear exposure. Pharmacist's Letter/Prescriber's Letter 2001;17(12):171214.
- 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.
- Cabezas C, Bustamante B, Holgado W, Begue RE. Treatment of cutaneous sporotrichosis with one daily dose of potassium iodide. Pediatr Infect Dis J 1996;15:352-4. PubMed
- 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
- Yarrington CD, Pearce EN. Dietary iodine in pregnancy and postpartum. Clin Obstet Gynecol 2011;54:459-70. PubMed
- Goel, S., Mandhani, A., Srivastava, A., Kapoor, R., Gogoi, S., Kumar, A., and Bhandari, M. Is povidone iodine an alternative to silver nitrate for renal pelvic instillation sclerotherapy in chyluria? BJU.Int 2004;94(7):1082-1085. PubMed
- Teng, W., Shan, Z., Teng, X., Guan, H., Li, Y., Teng, D., Jin, Y., Yu, X., Fan, C., Chong, W., Yang, F., Dai, H., Yu, Y., Li, J., Chen, Y., Zhao, D., Shi, X., Hu, F., Mao, J., Gu, X., Yang, R., Tong, Y., Wang, W., Gao, T., and Li, C. Effect of iodine int
- Crawford, B. A., Cowell, C. T., Emder, P. J., Learoyd, D. L., Chua, E. L., Sinn, J., and Jack, M. M. Iodine toxicity from soy milk and seaweed ingestion is associated with serious thyroid dysfunction. Med J Aust. 10-4-2010;193(7):413-415. PubMed
- Ohkuma, M. Molluscum contagiosum treated with iodine solution and salicylic acid plaster. Int J Dermatol. 1990;29(6):443-445. PubMed
- Connelly KJ, Boston BA, Pearce EN, Sesser D, Snyder D, Braverman LE, Pino S, LaFranchi SH. Congenital hypothyroidism caused by excess prenatal maternal iodine ingestion. J Pediatr. 2012 Oct;161(4):760-2. PubMed
- Kasahara T, Narumi S, Okasora K, Takaya R, Tamai H, Hasegawa T. Delayed onset congenital hypothyroidism in a patient with DUOX2 mutations and maternal iodine excess. Am J Med Genet A. 2013 Jan;161A(1):214-7.
- Murcia M, Rebagliato M, Iñiguez C, Lopez-Espinosa MJ, Estarlich M, Plaza B, Barona-Vilar C, Espada M, Vioque J, Ballester F. Effect of iodine supplementation during pregnancy on infant neurodevelopment at 1 year of age. Am J Epidemiol. 2011 Apr 1;173(7):8 PubMed
- Sang Z, Wang PP, Yao Z, Shen J, Halfyard B, Tan L, Zhao N, Wu Y, Gao S, Tan J, Liu J, Chen Z, Zhang W. Exploration of the safe upper level of iodine intake in euthyroid Chinese adults: a randomized double-blind trial. Am J Clin Nutr. 2012 Feb;95(2):367-73 PubMed
- Speeckaert MM, Speeckaert R, Wierckx K, Delanghe JR, Kaufman JM. Value and pitfalls in iodine fortification and supplementation in the 21st century. Br J Nutr. 2011 Oct;106(7):964-73. PubMed
- Yun SE, Kang Y, Bae EJ, Hwang K, Jang HN, Cho HS, Chang SH, Park DJ. Iodine-induced thyrotoxic hypokalemic paralysis after ingestion of Salicornia herbace. Ren Fail. 2014 Apr;36(3):461-3.
- Iodine Hypersensitivity. Pharmacist's Letter/Prescriber's Letter 2011; 27(5):270504.
- Hammel JA, Selby JC. Pustular eruption in a patient with cancer treated with complementary and alternative medicine. JAMA Dermatology 2017 October; E1. doi: 10.1001/jamadermatol.2017.3749. [Epub ahead of print] PubMed
- Gil GS, Smith BW, Guerra JR, Williams WT. Acute Delirium in a Hypothyroid Patient Precipitated by Iodine Supplements Use. Am J Ther. 2018;25(6):e717-e718. PubMed
- Hamby T, Kunnel N, Dallas JS, Wilson DP. Maternal iodine excess: an uncommon cause of acquired neonatal hypothyroidism. J Pediatr Endocrinol Metab. 2018;31(9):1061-1064. PubMed
- Censi S, Watutantrige-Fernando S, Groccia G, et al. The Effects of Iodine Supplementation in Pregnancy on Iodine Status, Thyroglobulin Levels and Thyroid Function Parameters: Results from a Randomized Controlled Clinical Trial in a Mild-to-Moderate Iodine
- Rovner MS, Wolf BJ, Rubin M, et al. Instillation of 5% Povidone-Iodine Ophthalmic Drops Decreases the Respiratory Rate in Children Undergoing Strabismus Surgery: A Randomized Controlled Trial. J Pediatr Ophthalmol Strabismus. 2019;56(6):378-382. PubMed
- Guenezan J, Garcia M, Strasters D, et al. Povidone Iodine Mouthwash, Gargle, and Nasal Spray to Reduce Nasopharyngeal Viral Load in Patients With COVID-19: A Randomized Clinical Trial. JAMA Otolaryngol Head Neck Surg. 2021;147(4):400-401. PubMed
- Li F, Wan S, Zhang L, et al. A Meta-Analysis of the Effect of Iodine Excess on the Intellectual Development of Children in Areas with High Iodine Levels in their Drinking Water. Biol Trace Elem Res 2022;200(4):1580-1590. PubMed
Dulse 5 references
- Malta D, Arcand J, Ravindran A, Floras V, Allard JP, Newton GE. Adequate intake of potassium does not cause hyperkalemia in hypertensive individuals taking medications that antagonize the renin angiotensin aldosterone system. Am J Clin Nutr 2016 Oct;104(4 PubMed
- Allsopp P, Crowe W, Bahar B, et al. The effect of consuming Palmaria palmata-enriched bread on inflammatory markers, antioxidant status, lipid profile and thyroid function in a randomised placebo-controlled intervention trial in healthy adults. Eur J Nutr PubMed
- McGrath BM, Harmon JP, Bishop G. Palmaria palmata (Dulse) as an unusual maritime aetiology of hyperkalemia in a patient with chronic renal failure: a case report. J Med Case Rep. 2010;4:301. PubMed
- Furuta T, Miyabe Y, Yasui H, Kinoshita Y, Kishimura H. Angiotensin I converting enzyme inhibitory peptides derived from phycobiliproteins of dulse Palmaria palmata. Mar Drugs. 2016;14(2):32. PubMed
- Takase T, Nakamura A, Miyoshi H, et al. Effects of Palmaria palmata on lipid metabolism and glycemic control in participants with hypercholesterolemia in a randomized double-blind placebo-controlled trial. Phytother Res. 2020.
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.
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