Drug & supplement interaction

Docosahexaenoic Acid (dha) + Sumatriptan

Sumatriptan brand name: Tosymra.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Docosahexaenoic Acid (dha) and Sumatriptan 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Docosahexaenoic Acid (dha) and Sumatriptan

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 Sumatriptan and Docosahexaenoic Acid (dha) 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.

Docosahexaenoic Acid (dha) safety at a glance

Docosahexaenoic Ac... overall Generally safe DHA is generally well tolerated at typical supplement doses for most adults.
Pregnancy Likely Safe When used orally and appropriately. An intake of DHA 650 mg daily from food and/or supplements during pregnancy seems to be required to prevent a reduction in D... Read the full pregnancy detail
Breastfeeding Likely Safe When used orally and appropriately. An intake of DHA 650 mg daily from food and/or supplements during pregnancy seems to be required to prevent a reduction in D... Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Sumatriptan and Docosahexaenoic Acid (dha)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Sumatriptan

Interactions in our licensed database are recorded against drug classes, not just single drug names. Sumatriptan is filed under 4 classifications — including qt interval-prolonging drugs, serotonergic drugs, serotonergic drugs. Docosahexaenoic Acid (dha) has documented interactions with 3 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate), antidiabetes drugs (moderate) and antihypertensive drugs (moderate) — and none of Sumatriptan’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Docosahexaenoic Acid (dha) Does Interact With Other Medications

Docosahexaenoic Acid (dha) has 375 moderate known drug interactions in our database — Sumatriptan isn’t one of them. If you take anything else, check it against the full list below.

Taking anything else?

Check Another of Your Medications Against Docosahexaenoic Acid (dha)

Covers the 2,830 medications we’ve checked against Docosahexaenoic Acid (dha). Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Docosahexaenoic Acid (dha) and Sumatriptan May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Dizziness / Headache Additional detail

    Docosahexaenoic Acid (dha)

    “Orally, DHA may cause dizziness, headache, insomnia, fatigue, and anxiety. In one clinical study, one parent of a pediatric patient treated with DHA 600 mg daily reported increased disruptive behavior in the child.”

    Docosahexaenoic Acid (dha) · Natural Medicines adverse-effect record, reported in anxiety.

    4 sources cited
    1. 10869. Marangell LB, Martinez JM, Zboyan HA, et al. A double-blind, placebo-controlled study of the omega-3 fatty acid docosahexaenoic acid in the treatment of major depression. Am J Psychiatry 2003;160:996-8.. PubMed
    2. 11333. Wheaton DH, Hoffman DR, Locke KG, et al. Biological safety assessment of docosahexaenoic acid supplementation in a randomized clinical trial for X-linked retinitis pigmentosa. Arch Ophthalmol 2003;121:1269-78. PubMed
    3. 48217. Mischoulon D, Best-Popescu C, Laposata M, et al. A double-blind dose-finding pilot study of docosahexaenoic acid (DHA) for major depressive disorder. Eur Neuropsychopharmacol. 2008;18(9):639-645. PubMed
    4. 90699. Richardson AJ, Burton JR, Sewell RP, Spreckelsen TF, Montgomery P. Docosahexaenoic acid for reading, cognition and behavior in children aged 7-9 years: a randomized, controlled trial (the DOLAB Study). PLoS One. 2012;7(9):e43909. PubMed

    Sumatriptan

    Listed in the ADVERSE REACTIONS section of the FDA label for Sumatriptan. Read the label on DailyMed ›

Reported for Docosahexaenoic Acid (dha) but not commonly for Sumatriptan: stomach upset, diarrhea, bloating or gas and heartburn.

Effects for Sumatriptan come from the ADVERSE REACTIONS section of its FDA label; effects for Docosahexaenoic Acid (dha) come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Docosahexaenoic Acid (dha) in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When used orally and appropriately. An intake of DHA 650 mg daily from food and/or supplements during pregnancy seems to be required to prevent a reduction in DHA status before delivery. DHA is commonly used during pregnancy and lactation and is a component of some prenatal supplements. DHA is a normal component of breast milk, with higher levels in breast milk following term vs. preterm pregnancies. When taken as a prenatal supplement, DHA increases DHA levels in breast milk. Doses of DHA ranging from 300-600 mg daily beginning during the first trimester of pregnancy have been used safely in clinical research. When taken during lactation, DHA increases DHA levels in breast milk. When initiated within 72 hours of delivery of a very preterm infant, taking DHA 1.2 grams daily increases DHA levels in breast milk within 14 days. One study found that DHA supplementation during lactation increased the risk of bronchopulmonary dysplasia in breast-feeding infants born less than 29 weeks gestational age; however, it is unclear if this was due to DHA or various confounding factors. The tolerable upper intake level of DHA during pregnancy or lactation has not been established; most experts recommend DHA 200-300 mg daily. While it is typically advised that this need is met by consuming 8-12 ounces of seafood weekly during pregnancy and 4-8 ounces weekly during lactation, those with nutrient deficiency or those following a vegan diet may meet this need with supplementation.

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

Overlapping uses

What Sumatriptan Is Prescribed For, and What Docosahexaenoic Acid (dha) Has Been Studied For

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

Sumatriptan is prescribed for: Sumatriptan is used to stop a migraine headache once it starts — with or without aura (the visual or sensory warning signs some people get before a migraine). It is available as tablets, nasal sprays, nasal capsules, and subcutaneous (under-the-skin) injections for this purpose. Sumatriptan subcutaneous injections (brands: Imitrex injection, Sumatriptan Injection, Sumatriptan Succinate Injection) are also approved to treat acute cluster headaches in adults. Sumatriptan is not used to prevent migraines or cluster headaches — it only treats attacks once they begin.

Docosahexaenoic Acid (dha) has been studied for:

  • Migraine headache studied, not established Docosahexaenoic Acid (dha) has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Docosahexaenoic Acid (dha) for migraine headache

    Although there has been interest in using oral DHA for migraine headache, there is insufficient reliable information about the clinical effects of DHA for this condition.

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 Sumatriptan on your own; if you are taking Docosahexaenoic Acid (dha) for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Docosahexaenoic Acid (dha) or Sumatriptan

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Docosahexaenoic Acid (dha) or Sumatriptan, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Sumatriptan

This page covers Docosahexaenoic Acid (dha) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Sumatriptan page lists 50 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 8 major · 31 moderate · 11 minor.

From our pharmacist’s overview on the Sumatriptan page

“The supplement risk that matters most with sumatriptan (Tosymra) is serotonin overload. This migraine drug works through serotonin receptors, and 20 of the 50 interacting ingredients on file, 5-HTP among them, can push serotonin activity higher still, raising the risk of serotonin syndrome (agitation, racing heart, fever).”

Reviewed by 2 · Jul 18, 2026

Open the Sumatriptan interaction page

How much people look this up

Where Docosahexaenoic Acid (dha) and Sumatriptan 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 Docosahexaenoic Acid (dha)
Steady interest

#1,214 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Sumatriptan
Top 5%

#40 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 Docosahexaenoic Acid (dha) reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Docosahexaenoic Acid (dha) and Sumatriptan 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 .
Supplement

About Docosahexaenoic Acid (dha)

What is Docosahexaenoic Acid (dha)?

Docosahexaenoic Acid (dha)
  • Brain and cognitive health
  • Eye and vision health
  • Fetal and infant development
  • Heart and triglyceride support
  • General omega-3 supplementation

DHA is an omega-3 fatty acid found in fatty fish and algae that is a building block for the brain, nervous system, and eyes. It is widely used and generally well tolerated, with the strongest support for fetal/infant development and lowering triglycerides; evidence for many other uses is mixed. Talk with your pharmacist or doctor before starting, especially if you are pregnant, have a bleeding risk, or take blood thinners.

Fatty fish oils, algae · Softgels, capsules, liquid oil, algae-based (vegetarian) capsules, prenatal vitamins

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

Docosahexaenoic Acid (dha): dosing

There is no single standard dose of DHA that fits everyone, and the right amount depends on your reason for using it. Do not assume that taking more is better, since higher doses raise the chance of side effects and bleeding.

From our Docosahexaenoic Acid (dha) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Docosahexaenoic Acid (dha) monograph & all interactions
Medication

About Sumatriptan

What Is Sumatriptan Used For?

Brand name: Tosymra

Sumatriptan is used to stop a migraine headache once it starts — with or without aura (the visual or sensory warning signs some people get before a migraine). It is available as tablets, nasal sprays, nasal capsules, and subcutaneous (under-the-skin) injections for this purpose.

Sumatriptan subcutaneous injections (brands: Imitrex injection, Sumatriptan Injection, Sumatriptan Succinate Injection) are also approved to treat acute cluster headaches in adults. Sumatriptan is not used to prevent migraines or cluster headaches — it only treats attacks once they begin.

Most-Reported Side Effects for Sumatriptan

From FAERS, the FDA’s public side-effect reporting system (46,096 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Headache 3,911 reports
Nausea 3,510 reports
Migraine 3,445 reports
Fatigue 2,617 reports
Dizziness 2,121 reports
See full Sumatriptan drug information
Keep checking

Other Drugs & Docosahexaenoic Acid (dha)

Browse every other medication we’ve checked against Docosahexaenoic Acid (dha) — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
375Moderate
0Minor
2,454No known interaction
Moderate

375 interactions

Showing 60 of 375 moderate interactions — see all 375 on the Docosahexaenoic Acid (dha) page.

No interaction 2,454 drugs checked — show the list
Evidence & sources

Docosahexaenoic Acid (dha) References

The 49 references that drive our Docosahexaenoic Acid (dha) 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. Akedo I, Ishikawa H, Nakamura T, et al. Three cases with familial adenomatous polyposis diagnosed as having malignant lesions in the course of a long-term trial using docosahexanoic acid (DHA)-concentrated fish oil capsules (abstract). Jpn J Clin Oncol PubMed
  2. Prisco D, Paniccia R, Bandinelli B, et al. Effect of medium-term supplementation with a moderate dose of n-3 polyunsaturated fatty acids on blood pressure in mild hypertensive patients. Thromb Res 1998;1:105-12.
  3. Grimsgaard S, Bonaa KH, Hansen JB, Nordoy A. Highly purified eicosapentaenoic acid and docosahexaenoic acid in humans have similar triacylglycerol-lowering effects but divergent effects on serum fatty acids. Am J Clin Nutr 1997;66:649-59.
  4. Toft I, Bonaa KH, Ingebretsen OC, et al. Effects of n-3 polyunsaturated fatty acids on glucose homeostasis and blood pressure in essential hypertension. A randomized, controlled trial. Ann Intern Med 1995;123:911-8.
  5. Sacks FM, Hebert P, Appel LJ, et al. Short report: the effect of fish oil on blood pressure and high-density lipoprotein-cholesterol levels in phase I of the trials of hypertension prevention. J Hypertens 1994;12:209-13.
  6. Vandongen R, Mori TA, Burke V, et al. Effects on blood pressure of omega 3 fats in subjects at increased risk of cardiovascular disease. Hypertension 1993;22:371-9. PubMed
  7. FDA. Center for Food Safety and Applied Nutrition. Letter regarding dietary supplement health claim for omega-3 fatty acids and coronary heart disease. Available at: http://www.fda.gov/ohrms/dockets/dockets/95s0316/95s-0316-Rpt0272-38-Appendix-D-Reference
  8. Pedersen HS, Mulvad G, Seidelin KN, et al. N-3 fatty acids as a risk factor for haemorrhagic stroke. Lancet 1999;353:812-3. PubMed
  9. Ito Y, Suzuki K, Imai H, et al. Effects of polyunsaturated fatty acids on atrophic gastritis in a Japanese population. Cancer Lett 2001;163:171-8. PubMed
  10. Kris-Ehterton PM, Harris WS, Appel LJ, et al. Fish consumption, fish oil, omega-3 fatty acids, and cardiovascular disease. Circulation 2002;106:2747-57. PubMed
  11. Woodman RJ, Mori TA, Burke V, et al. Effects of purified eicosapentaenoic and docosahexaenoic acids on glycemic control, blood pressure, and serum lipids in type 2 diabetic patients with treated hypertension. Am J Clin Nutr 2002;76:1007-15.. PubMed
  12. Marangell LB, Martinez JM, Zboyan HA, et al. A double-blind, placebo-controlled study of the omega-3 fatty acid docosahexaenoic acid in the treatment of major depression. Am J Psychiatry 2003;160:996-8.. PubMed
  13. Leng GC, Smith FB, Fowkes FG, et al. Relationship between plasma essential fatty acids and smoking, serum lipids, blood pressure and haemostatic and rheological factors. Prostaglandins Leukot Essent Fatty Acids 1994;51:101-8. PubMed
  14. Nelson GJ, Schmidt PS, Bartolini GL, et al. The effect of dietary docosahexaenoic acid on platelet function, platelet fatty acid composition, and blood coagulation in humans. Lipids 1997;32:1129-36. PubMed
  15. Wheaton DH, Hoffman DR, Locke KG, et al. Biological safety assessment of docosahexaenoic acid supplementation in a randomized clinical trial for X-linked retinitis pigmentosa. Arch Ophthalmol 2003;121:1269-78. 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 Docosahexaenoic Acid (dha) and Sumatriptan Together: Common Questions

Is it safe to take Docosahexaenoic Acid (dha) with Sumatriptan?
We do not list a known interaction between Docosahexaenoic Acid (dha) and Sumatriptan. 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.
Do Docosahexaenoic Acid (dha) and Sumatriptan have any of the same side effects?
Yes — our sources link each of them separately to 2 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Are Docosahexaenoic Acid (dha) and Sumatriptan 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 Docosahexaenoic Acid (dha) in each. That is a conversation for your prescriber, especially if Sumatriptan is being adjusted to a target.
How was the Docosahexaenoic Acid (dha) and Sumatriptan combination checked?
Interactions in our licensed database are recorded against drug classes. Sumatriptan is filed under 4 classifications, and Docosahexaenoic Acid (dha) has documented interactions with 3 drug classes — none of Sumatriptan's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Docosahexaenoic Acid (dha) interact with any other medications?
Yes. Docosahexaenoic Acid (dha) has 375 documented drug interactions in our database — Sumatriptan is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Sumatriptan interact with any supplements?
Yes. Sumatriptan has documented interactions with 50 supplements in our database — Docosahexaenoic Acid (dha) is not one of them. The Sumatriptan interaction page linked on this page lists every one, ranked by severity.

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

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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.