Drug & supplement interaction

Ascophyllum Nodosum + Setmelanotide

Setmelanotide brand name: Imcivree.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 13, 2026

The bottom line No known interaction

We found no known interaction between Ascophyllum Nodosum and Setmelanotide in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.

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Interaction report

Ascophyllum Nodosum and Setmelanotide

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Setmelanotide and Ascophyllum Nodosum in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Ascophyllum Nodosum safety at a glance

Ascophyllum Nodosu... overall Use caution Generally used in foods, but its iodine content and possible heavy metal contamination warrant caution.

Pregnancy Avoid Avoid due to high iodine levels and possible contaminants that may affect the baby.

Breastfeeding Avoid Avoid because iodine and contaminants can pass into breast milk.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Setmelanotide and Ascophyllum Nodosum? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

Keep it in perspective

Ascophyllum Nodosum Does Interact With Other Medications

Ascophyllum Nodosum has 22 moderate known drug interactions in our database — Setmelanotide isn’t one of them. If you take anything else, check it against the full list below.

Moderate 22 No known interaction 2,808 (incl. Setmelanotide)

Taking anything else?

Check Another of Your Medications Against Ascophyllum Nodosum

Covers the 2,830 medications we’ve checked against Ascophyllum Nodosum. Pick one to open its full report.

What to actually watch for

What Setmelanotide’s Own FDA Label Lists

This is not an interaction — none of it involves Ascophyllum Nodosum. These are the most notable effects listed in the ADVERSE REACTIONS section of Setmelanotide’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 5 of them are worth acting on rather than waiting out — marked below.

Thoughts of self-harm Worth acting on
Low sodium Worth acting on
Low mood Worth acting on
A severe allergic reaction Worth acting on
An allergic reaction Worth acting on
Stomach pain
Diarrhea
Vomiting
Headache
Nausea

From the ADVERSE REACTIONS section of the FDA label for Setmelanotide. Read the label on DailyMed › Ascophyllum Nodosum’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Ascophyllum Nodosum side to compare — that is a limit of the record, not a statement that Ascophyllum Nodosum has no side effects.

Overlapping uses

What Setmelanotide Is Prescribed For, and What Ascophyllum Nodosum Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Setmelanotide is a prescription medicine with approved uses on its FDA label. Ascophyllum Nodosum is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Setmelanotide is prescribed for: Imcivree is used to reduce excess body weight and maintain that weight loss long-term in adults and children with certain rare, specific causes of obesity. It is not intended for general weight loss or common obesity. Imcivree is approved for: acquired hypothalamic obesity (HO) in patients aged 4 and older; Bardet-Biedl syndrome (BBS) in patients aged 2 and older; and obesity caused by confirmed deficiencies of POMC, PCSK1, or LEPR genes (pathogenic, likely pathogenic, or uncertain-significance variants) in patients aged 2 and older.

Ascophyllum Nodosum has been studied for:

Obesity studied, not established Ascophyllum Nodosum has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

Ascophyllum Nodosum for obesity

Oral Ascophyllum nodosum has only been evaluated in combination with other ingredients; its effect when used alone is unclear.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Setmelanotide on your own; if you are taking Ascophyllum Nodosum for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

One more smart check

Taking Ascophyllum Nodosum as Part of a Dietary Supplement Product? Check It for Interactions

We hold 360 real supplement products containing Ascophyllum Nodosum, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Ascophyllum Nodosum. Even though Ascophyllum Nodosum itself has no known interaction with Setmelanotide, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Ascophyllum Nodosum and Setmelanotide Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Ascophyllum Nodosum

Top half

#431 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Setmelanotide

Steady interest

#2,293 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?

Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Ascophyllum Nodosum reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Ascophyllum Nodosum and Setmelanotide records this page draws on were last updated July 10, 2026.
What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Ascophyllum Nodosum

What is Ascophyllum Nodosum?

Weight management
Blood sugar support
Thyroid support (iodine source)
Digestive health
Source of vitamins and minerals
Joint comfort

Ascophyllum nodosum (often sold as bladderwrack or brown seaweed) is a nutrient-rich algae that people use for weight, blood sugar, and thyroid support, but solid human evidence is limited for most of these uses. Because it naturally contains iodine and can absorb heavy metals like arsenic, it should be used cautiously, and pregnant or breastfeeding people should avoid it unless a doctor approves.

Ascophyllum nodosum · Fucaceae · Whole seaweed (thallus/fronds) · Capsules, tablets, powder, extracts, teas, and topical products

An interaction check asks whether these two react with each other — it does not ask whether Ascophyllum Nodosum is a good idea for someone in your situation. Here is what our Ascophyllum Nodosum record says about it on its own.

Ascophyllum Nodosum: dosing

There is no well-established standard dose of Ascophyllum nodosum. Products vary widely in strength and iodine content, which makes consistent dosing difficult.If you choose to use it, follow the directions on the product label and do not exceed the recommended amount.

From our Ascophyllum Nodosum monograph — the full record covers uses, side effects and every documented interaction.

Read the full Ascophyllum Nodosum monograph & all interactions

Medication

About Setmelanotide Injection

What Is Setmelanotide Injection Used For?

Brand name: Imcivree

Imcivree is used to reduce excess body weight and maintain that weight loss long-term in adults and children with certain rare, specific causes of obesity. It is not intended for general weight loss or common obesity.

Imcivree is approved for: acquired hypothalamic obesity (HO) in patients aged 4 and older; Bardet-Biedl syndrome (BBS) in patients aged 2 and older; and obesity caused by confirmed deficiencies of POMC, PCSK1, or LEPR genes (pathogenic, likely pathogenic, or uncertain-significance variants) in patients aged 2 and older.

See full Setmelanotide Injection drug information

Keep checking

Other Drugs & Ascophyllum Nodosum

Browse every other medication we’ve checked against Ascophyllum Nodosum — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major

22Moderate

0Minor

2,807No known interaction

22 Moderate 2,807 No interaction

Moderate

22 interactions

No interaction 2,807 drugs checked — show the list

We also checked Ascophyllum Nodosum against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,807 medications checked with no known interaction — see the full Ascophyllum Nodosum list.

See the full Ascophyllum Nodosum interactions page

See every supplement checked against Setmelanotide, ranked by severity

Evidence & sources

Ascophyllum Nodosum References

The 5 references that drive our Ascophyllum Nodosum 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.

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.
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
Combet E, Ma ZF, Cousins F, et al. Low-level seaweed supplementation improves iodine status in iodine-insufficient women. Br J Nutr 2014;112:753-61. PubMed
Simmons-Boyce JL, Purcell SL, Nelson CM, MacKinnon SL. Dietary Ascophyllum nodosum increases urinary excretion of tricarboxylic acid cycle intermediates in male Sprague-dawley rats. J Nutr 2009;139:1487-94. PubMed
Sorge US, Henriksen M, Bastan A, et al. Short communication: Iodine concentrations in serum, milk, and tears after feeding Ascophyllum nodosum to dairy cows-A pilot study. J Dairy Sci 2016;99:8472-6. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Ascophyllum Nodosum and Setmelanotide Together: Common Questions

Is it safe to take Ascophyllum Nodosum with Setmelanotide?

We do not list a known interaction between Ascophyllum Nodosum and Setmelanotide. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.

Are Ascophyllum Nodosum and Setmelanotide used for the same thing?

They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Ascophyllum Nodosum in each. That is a conversation for your prescriber, especially if Setmelanotide is being adjusted to a target.

Does Ascophyllum Nodosum interact with any other medications?

Yes. Ascophyllum Nodosum has 22 documented drug interactions in our database — Setmelanotide is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

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

Where next

Keep Exploring

Ascophyllum Nodosum monograph Uses, safety profile, and every drug interaction in one place Setmelanotide Injection drug information The full plain-English guide to this medication Setmelanotide supplement interactions Every supplement checked against Setmelanotide, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 5 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Setmelanotide and Ascophyllum Nodosum?

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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.