Herb & supplement monograph

Dulse Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·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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Reviewed by licensed pharmacists Sourced from Natural Medicines

On this page

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.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Dulse using our pharmacist-reviewed interaction data.

AI summaries are generated from our Dulse interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

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.