Herb & supplement monograph

Dulse Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by ·Updated June 2026
What is this page for?

First and foremost: how Dulse interacts with medications. The heart of this page is the interaction list — every drug Dulse is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Dulse is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Dulse Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Dulse drug interaction appears low for most people. None of the listed interactions are rated major, most are minor, and nearly all rest on theoretical concerns rather than documented problems in people.

Interactions deserving the most attention

The iodine in dulse is the main thing we watch. It could shift thyroid function, which matters most for people taking thyroid hormone or antithyroid drugs, and clinical research has linked dulse to a measurable rise in thyroid stimulating hormone levels. The same iodine concern applies to amiodarone, a heart rhythm drug that already carries a large iodine load. Dulse is also rich in potassium, so pairing it with digoxin or potassium-sparing diuretics could in theory push potassium too high, though this has not been shown in humans.

What the rest of the list means

A long list like this does not mean every combination is harmful. Most entries are predictions based on dulse's natural iodine and potassium content, not on reported harm. In fact, moderate dietary potassium taken with blood pressure medicines has not raised potassium levels in people, so many of these concerns may never play out in real life.

Check your medications against Dulse

Based on HelloPharmacist’s Dulse interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Dulse

85 medications have a known interaction with Dulse, graded by severity. Select any drug for the full evidence-based detail.

2,830 drugs
AmiodaroneCordarone, Pacerone
Moderate Amiodarine (cordarone)

Theoretically, combining dulse with amiodarone might cause excessively high iodine levels.

Read the full Dulse + Amiodarone interaction Amiodarone drug page: uses, dosage & side effects
CarbimazoleNeo-Mercazole
Moderate Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.

Read the full Dulse + Carbimazole interaction
Conjugated EstrogensCenestin, Enjuvia, Premarin, Premarin Vaginal Cream
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Conjugated Estrogens interaction
Desiccated Thyroid ExtractWesthroid, WP Thyroid
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Desiccated Thyroid Extract interaction
Desiccated Thyroid Extract (prescription Drug)Nature-Throid, Thyrar
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Desiccated Thyroid Extract (prescription Drug) interaction
DextrothyroxineCholoxin
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Dextrothyroxine interaction
DigoxinDigitek, Lanoxicaps, Lanoxin
Moderate Digoxin (lanoxin)

Theoretically, dulse might increase the risk of hyperkalemia when taken with digoxin.

Read the full Dulse + Digoxin interaction Digoxin drug page: uses, dosage & side effects
Human Chorionic Gonadotropin (hcg)Pregnyl
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Human Chorionic Gonadotropin (hcg) interaction
LevothyroxineEltroxin, Estre, Euthyrox, Levo-T, Levolet, Levothroid +5 more
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Levothyroxine interaction Levothyroxine drug page: uses, dosage & side effects
Levothyroxine SodiumErmez, Thyquidity, Tirosint-Sol
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Levothyroxine Sodium interaction
Levothyroxine, LiothyronineArmour Thyroid
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Levothyroxine, Liothyronine interaction
LiothyronineCytomel
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Liothyronine interaction Liothyronine drug page: uses, dosage & side effects
LiotrixEuthroid 1, Euthroid 1/2, Euthroid 3
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Liotrix interaction Liotrix drug page: uses, dosage & side effects
Liotrix, T4/t3Euthroid 2
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Liotrix, T4/t3 interaction
MenotropinsMenopur, Repronex
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Menotropins interaction
Methenamine MandelateMandelamine, Methimazole
Moderate Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.

Read the full Dulse + Methenamine Mandelate interaction Methenamine Mandelate drug page: uses, dosage & side effects
MethimazoleTapazole
Moderate Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.

Read the full Dulse + Methimazole interaction Methimazole drug page: uses, dosage & side effects
OspemifeneOsphena
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Ospemifene interaction Ospemifene drug page: uses, dosage & side effects
Potassium Iodide (prescription Drug)Thyro-Block
Moderate Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.

Read the full Dulse + Potassium Iodide (prescription Drug) interaction
Propylthiouracil, PtuPropylthiouracil
Moderate Antithyroid Drugs

Theoretically, due to its iodine content, dulse might alter the effects of antithyroid drugs.

Read the full Dulse + Propylthiouracil, Ptu interaction Propylthiouracil, Ptu drug page: uses, dosage & side effects
Testosterone UndecanoateAndriol, Aveed, Jatenzo, Kyzatrex
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Testosterone Undecanoate interaction Testosterone Undecanoate drug page: uses, dosage & side effects
ThyroglobulinProloid
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Thyroglobulin interaction
Thyroid HormoneEtwon
Moderate Thyroid Hormone

Theoretically, due to its iodine content, dulse might alter the effects of thyroid hormone.

Read the full Dulse + Thyroid Hormone interaction
AmilorideAmilamont, Midamor
Minor Potassium-sparing Diuretics

Theoretically, dulse might increase the risk of hyperkalemia when taken with potassium-sparing diuretics.

Read the full Dulse + Amiloride interaction Amiloride drug page: uses, dosage & side effects
Amiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
Minor Potassium-sparing Diuretics

Theoretically, dulse might increase the risk of hyperkalemia when taken with potassium-sparing diuretics.

Read the full Dulse + Amiloride, Hydrochlorothiazide interaction Amiloride, Hydrochlorothiazide drug page: uses, dosage & side effects
Amlodipine Besylate, BenazeprilLotrel
Minor Ace Inhibitors (aceis)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ACEIs.

Read the full Dulse + Amlodipine Besylate, Benazepril interaction
AzilsartanEdarbi
Minor Angiotensin Receptor Blockers (arbs)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ARBs.

Read the full Dulse + Azilsartan interaction Azilsartan drug page: uses, dosage & side effects
Azilsartan, ChlorthalidoneEdarbyclor
Minor Angiotensin Receptor Blockers (arbs)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ARBs.

Read the full Dulse + Azilsartan, Chlorthalidone interaction
BenazeprilLotensin
Minor Ace Inhibitors (aceis)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ACEIs.

Read the full Dulse + Benazepril interaction Benazepril drug page: uses, dosage & side effects
Benazepril, HydrochlorothiazideLotensin HCT
Minor Ace Inhibitors (aceis)

Theoretically, dulse might increase the risk of hyperkalemia when taken with ACEIs.

Read the full Dulse + Benazepril, Hydrochlorothiazide interaction
Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each drug listed above links to the full report for that exact Dulse combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
The big picture

The kinds of drugs Dulse affects

Every type of medication (drug category) Dulse is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 7 drug categories Dulse interacts with
Amiodarine (cordarone)Antithyroid DrugsDigoxin (lanoxin)Thyroid HormoneAce Inhibitors (aceis)Angiotensin Receptor Blockers (arbs)Potassium-sparing Diuretics
Amiodarine (Cordarone)

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

Likelihood Possible Evidence D
Antithyroid Drugs

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

Likelihood Possible Evidence D
Digoxin (Lanoxin)

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

Likelihood Possible Evidence D
Thyroid Hormone

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

Likelihood Possible Evidence D
Ace Inhibitors (Aceis)

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

Likelihood Possible Evidence D
Angiotensin Receptor Blockers (Arbs)

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

Likelihood Possible Evidence D
Potassium-Sparing Diuretics

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

Likelihood Possible Evidence D
Monograph

Dulse: Uses, Safety & Side Effects

Medically reviewed by · Reviewed June 2026 ·
The bottom line

Dulse is a red seaweed eaten as a food in many coastal cultures and is a natural source of iodine, potassium, protein, and antioxidant compounds. As a food it is generally considered safe for most people, but concentrated supplements can deliver large amounts of iodine and potassium, so use caution. Talk to your pharmacist or doctor before using it medicinally, especially if you have thyroid or kidney problems.

Dulse
Scientific name
Palmaria palmata
Family
Palmariaceae
Part used
Whole edible thallus (the leafy seaweed fronds)
Common forms
Dried flakes, whole dried leaf, powder, capsules, and as a food ingredient
People commonly use it for
  • Nutritional supplement (iodine, minerals)
  • Source of plant protein
  • General wellness
  • Anti-inflammatory support
  • Thyroid/iodine support

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallUse caution

Generally safe as a food, but supplements may contain high iodine and potassium and should be used cautiously.

PregnancyInsufficient reliable information

There is insufficient reliable information available about the safety of dulse when used in medicinal amounts during pregnancy or lactation; avoid amo...

Read the full pregnancy detail
BreastfeedingInsufficient reliable information

There is insufficient reliable information available about the safety of dulse when used in medicinal amounts during pregnancy or lactation; avoid amo...

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Jump to a section

Overview

Dulse (Palmaria palmata) is a red seaweed that grows along the cold, rocky coasts of the northern Atlantic and Pacific oceans, including northern Europe, North America, and parts of Japan. People have harvested and eaten it for centuries, especially in places like Ireland, Iceland, and Canada's Maritime provinces.

It is most often used as a food. Dulse can be eaten dried as a chewy snack, sprinkled as flakes onto soups and salads, or ground into a powder. More recently it has been sold as a dietary supplement in capsule or powder form, often marketed as a natural source of minerals and protein.

How it works

Dulse naturally contains a mix of nutrients and plant compounds. It is a good source of iodine, which the body needs to make thyroid hormones, and it also provides potassium, protein, fiber, and various vitamins and minerals.

Researchers have identified polyphenols and peptides in dulse that, in test-tube and animal studies, appear to act as antioxidants and may influence inflammation and blood pressure. It is important to understand that these are proposed mechanisms based on early laboratory research and may not translate into clear benefits in people.

Effectiveness

Does Dulse work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by .

Evidence overview · 2 uses evaluated
2 Insufficient evidence
How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.
2Likely EffectiveGood evidence, though not yet conclusive.
3Possibly EffectiveSome evidence suggests a benefit.
4Possibly IneffectiveSome evidence it may not help.
5Likely IneffectiveFairly strong evidence it doesn’t help.
6IneffectiveStrong evidence it doesn’t work.
7Insufficient Reliable Evidence to RateToo little research to say either way.

For Dulse, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.

Also studied for 2 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Hypercholesterolemia
Rating & evidence shown verbatim from Natural Medicines

It is unclear if oral dulse is beneficial in patients with hypercholesterolemia.

Insufficient Reliable Evidence To Rate Iodine deficiency
Rating & evidence shown verbatim from Natural Medicines

Although there has been interest in using oral dulse for the prevention of iodine deficiency, there is insufficient reliable information about the clinical effects of dulse for this purpose.

Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.

Safety & precautions

Eaten in normal food amounts, dulse is generally considered safe for most healthy people. The main concerns come from its high iodine and potassium content, which can become significant with concentrated supplements or large servings.

People with thyroid conditions (such as overactive or underactive thyroid) should be cautious, because too much iodine can disrupt thyroid function. People with kidney disease or those told to limit potassium should also be careful, since the body may struggle to clear extra potassium. Like other seaweeds, dulse can also absorb heavy metals from the ocean, so product quality matters.

For pregnancy and breastfeeding, food amounts are likely fine, but concentrated supplements should be avoided because their iodine content can be unpredictable and limited safety data exist. When in doubt, choose food over supplements and check with your doctor or pharmacist.

Side effects

Dulse is usually well tolerated as a food. Possible side effects include digestive upset, such as bloating or gas, especially when eaten in large amounts.

Because of its iodine content, excessive intake can affect the thyroid and may cause symptoms related to too much or too little thyroid hormone over time. Very high potassium intake could be a concern for people with kidney problems. Allergic reactions are uncommon but possible. Stop using it and seek medical care if you notice signs of an allergic reaction.

Dosing

There is no established standardized medicinal dose for dulse. As a food it is eaten in small amounts as flakes, snacks, or a recipe ingredient.

If you use a dulse supplement, follow the directions on the product label and do not exceed the recommended amount. Because iodine and potassium content can vary a lot between products, it is wise to check with a pharmacist or doctor before taking it regularly, particularly if you have thyroid or kidney concerns.

Pregnancy & Breastfeeding

Dulse & Pregnancy

Insufficient reliable information

There is insufficient reliable information available about the safety of dulse when used in medicinal amounts during pregnancy or lactation; avoid amounts greater than those found in foods.

Dulse & Breastfeeding

Insufficient reliable information

There is insufficient reliable information available about the safety of dulse when used in medicinal amounts during pregnancy or lactation; avoid amounts greater than those found in foods.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

© 2026 Therapeutic Research Center

Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center

References & further reading

The 5 references that drive our Dulse monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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.
Keep reading

This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.

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

Brand directory

Brands that make products with Dulse

144 brands in our database make a supplement containing Dulse.

Product directory

Supplement products with Dulse

575 products in our database contain Dulse. Open any to see its full ingredient list and every drug interaction we check.

Super Defense Food by Michael's Naturopathic Programs Powder 1.4 oz. · 40 Gram(s) Off market View ingredients & interactions Super Defense Food by Michael's Naturopathic Programs Powder 1.4 oz. · 40 Gram(s) Off market View ingredients & interactions Super Defense Food Natural Fruit Flavor by Michael's Naturopathic Programs Powder 1.4 oz. · 40 Gram(s) Off market View ingredients & interactions Super Green Max Plus by Swanson GreenFoods Formulas Powder 9 Oz(s) · 255 Gram(s) Off market View ingredients & interactions Super Greens by Country Farms Powder 9.88 Oz(s) · 280 Gram(s) Off market View ingredients & interactions Super Greens Chocolate Flavor by Nested Naturals Powder 9.5 Ounce(s) · 270 Gram(s) Off market View ingredients & interactions Super Greens Original Flavor by Nested Naturals Powder 8.5 Ounce(s) · 240 Gram(s) Off market View ingredients & interactions Super Greens Original Flavor by Nested Naturals Powder 8.5 Ounce(s) · 240 Gram(s) Off market View ingredients & interactions Super Wellgreens by 1-800-WellMed Powder 300 Gram(s) · 10.5 Oz(s) Off market View ingredients & interactions Superberry Original by Living Fuel Powder 883 Gram(s) Off market View ingredients & interactions Superberry Ultimate by Living Fuel Powder 910 Gram(s) Off market View ingredients & interactions Sweetish Bitters by Gaia Herbs Liquid 2 fl. Oz. · 59 mL Off market View ingredients & interactions Sweetish Bitters by Gaia Herbs Liquid 2 fl. Oz. · 59 mL Off market View ingredients & interactions Sweetish Bitters by Gaia Herbs Liquid 4 Fluid Ounce(s) · 118 mL Off market View ingredients & interactions T-150 by XYMOGEN Capsule 60 Vegetable Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 120 Vegetable Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 120 Vegetarian Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 60 Vegetarian Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 60 Vegetarian Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 120 Vegetarian Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 60 Vegetarian Capsule(s) Off market View ingredients & interactions T-150 by XYMOGEN Capsule 120 Vegetarian Capsule(s) Off market View ingredients & interactions Thyrobin by Rejuvica Health Capsule 59 mL · 2 Ounce(s) Off market View ingredients & interactions Thyroid Balance by Dr. Venessa's Formulas Capsule 60 Vegetarian Capsule(s) Off market View ingredients & interactions
Pharmacist Counseling Corner

Dulse: Common Questions

What is Dulse used for, and does it work?
People use Dulse for a range of reasons, but according to the Natural Medicines database the current clinical evidence is insufficient to confirm it works for the specific conditions it has been studied for. See the graded list on this page, and talk to your pharmacist or doctor before relying on it for any condition.
Does Dulse interact with prescription medications?
Yes. We list 85 medications with a known interaction with Dulse. Use the checker above to see how Dulse interacts with a specific drug.
How are Dulse interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take Dulse with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this Dulse interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
What is Dulse used for?
Dulse is mainly eaten as a nutritious food and as a natural source of iodine, minerals, and protein. Some people take it as a supplement for general wellness, but strong evidence for specific health benefits is lacking.
Is Dulse safe to eat?
For most healthy people, Dulse is generally safe in normal food amounts. Be cautious with concentrated supplements or large servings because of its high iodine and potassium content.
Can I take Dulse if I have a thyroid problem?
Dulse is high in iodine, which can affect thyroid function, so people with thyroid conditions should be cautious and talk to their doctor before using it regularly.
Is Dulse safe during pregnancy or breastfeeding?
Small food amounts are likely fine, but concentrated supplements should be avoided because their iodine levels can be unpredictable and safety data are limited. Check with your doctor first.

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

Keep exploring

Products that contain Dulse

A rotating sample of real supplements in our database that list Dulse — open any to see its full ingredients and every drug interaction we check.

See all 575 products with Dulse →
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