Drug & supplement interaction

Red Yeast Rice + Sumatriptan

Sumatriptan brand name: Tosymra.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Red Yeast Rice 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

Red Yeast Rice 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 Red Yeast Rice 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.

Red Yeast Rice safety at a glance

Red Yeast Rice overall Use caution It works like a statin drug and can carry similar risks, plus product quality varies.
Pregnancy Likely Unsafe When used orally. The red yeast rice constituent, lovastatin, has induced fetal skeletal malformations in animals. The US Food and Drug Administration (FDA) rec... Read the full pregnancy detail
Breastfeeding Avoid Avoid because of its statin-like activity and lack of safety data.

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 Red Yeast Rice? 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. Red Yeast Rice has documented interactions with 6 drug classes — the most serious being cyclosporine (neoral, sandimmune) (moderate), cytochrome p450 3a4 (cyp3a4) inhibitors (moderate) and gemfibrozil (lopid) (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

Red Yeast Rice Does Interact With Other Medications

Red Yeast Rice has 477 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 Red Yeast Rice

Covers the 2,830 medications we’ve checked against Red Yeast Rice. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Red Yeast Rice 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. One of them is worth acting on rather than waiting out — marked below.

  • Chest pain Worth acting on Additional detail

    Red Yeast Rice

    “Orally, red yeast rice used in combination with other natural ingredients, such as green tea extract and policosanol, has been associated with a case of chest pain and a case of tachycardia requiring hospitalization, in post marketing surveillance.”

    Red Yeast Rice · Natural Medicines adverse-effect record, reported in pain.

    1 source cited
    1. 94001. Mazzanti G, Moro PA, Raschi E, Da Cas R, Menniti-Ippolito F. Adverse reactions to dietary supplements containing red yeast rice: assessment of cases from the Italian surveillance system. Br J Clin Pharmacol 2017;83(4):894-908. PubMed

    Sumatriptan

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

  • Numbness or tingling Additional detail

    Red Yeast Rice

    “Orally, red yeast rice has been associated with dizziness, headache, fatigue, and tingling in the extremities. A case of peripheral neuropathy occurred in a 60-year-old male with a gastrointestinal tumor who was taking imatinib 400 mg daily along with red yeast rice for 3 years. Three months after cessation of red yeast rice, symptoms resolved.”

    Red Yeast Rice · Natural Medicines adverse-effect record, reported in cluster headache.

    6 sources cited
    1. 6988. Wang J, Lu A, Chi J. Multicenter clinical trial of the serum lipid-lowering effects of a monascus purpureus (red yeast) rice preparation from traditional Chinese medicine. Cur Ther Res 1997;58:964-78. DOI
    2. 16836. Becker DJ, Gordon RY, Halbert SC, et al. Red yeast rice for dyslipidemia in statin-intolerant patients: A randomized trial. Ann Intern Med 2009;150:830-9. PubMed
    3. 17089. Halbert SC, French B, Gordon RY, et al. Tolerability of red yeast rice (2,400 mg twice daily) versus pravastatin (20 mg twice daily) in patients with previous statin intolerance. Am J Cardiol 2010;105:198-204. PubMed
    4. 18110. Karl M, Rubenstein M, Rudnick C, Brejda J. A multicenter study of nutraceutical drinks for cholesterol (evaluating effectiveness and tolerability). J Clin Lipidology 2012;6:150-158. PubMed
    5. 94001. Mazzanti G, Moro PA, Raschi E, Da Cas R, Menniti-Ippolito F. Adverse reactions to dietary supplements containing red yeast rice: assessment of cases from the Italian surveillance system. Br J Clin Pharmacol 2017;83(4):894-908. PubMed
    6. 114649. Trogkanis E, Karalexi MA, Sergentanis TN, Kornarou E, Vassilakou T. Safety and Efficacy of the Consumption of the Nutraceutical "Red Yeast Rice Extract" for the Reduction of Hypercholesterolemia in Humans: A Systematic Review and Meta-Analysis. Nutrients PubMed

    Sumatriptan

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

  • Dizziness / Headache Additional detail

    Red Yeast Rice

    “Orally, red yeast rice seems to be well tolerated.

    Most Common Adverse Effects:

    Orally: Abdominal discomfort, diarrhea, dizziness, flatulence, headache, heartburn, myopathy, and nausea.

    Serious Adverse Effects (Rare):

    Orally: There have been reports of hepatotoxicity and rhabdomyolysis, likely related to the lovastatin content of red yeast rice. Contaminated red yeast rice might cause renal toxicity.”

    Red Yeast Rice · Natural Medicines adverse-effect record, reported in cluster headache.

    Sumatriptan

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

Reported for Red Yeast Rice but not commonly for Sumatriptan: liver problems, stomach upset, erection problems and kidney problems.

Effects for Sumatriptan come from the ADVERSE REACTIONS section of its FDA label; effects for Red Yeast Rice 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

Red Yeast Rice in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally. The red yeast rice constituent, lovastatin, has induced fetal skeletal malformations in animals. The US Food and Drug Administration (FDA) recommends that most patients discontinue statin therapy during pregnancy due to the risks to the fetus; however, in certain high-risk patients, a prescription statin may be continued during pregnancy.

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

From our Q&A

Questions About Red Yeast Rice 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 Red Yeast Rice 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 Red Yeast Rice 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

One more smart check

Taking Red Yeast Rice as Part of a Dietary Supplement Product? Check It for Interactions

We hold 593 real supplement products containing Red Yeast Rice, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Red Yeast Rice. Even though Red Yeast Rice itself has no known interaction with Sumatriptan, 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 Red Yeast Rice 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 Red Yeast Rice
Top 25%

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

29 days ago today
Medication Sumatriptan
Top 5%

#37 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 Red Yeast Rice reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Red Yeast Rice and Sumatriptan records this page draws on were last updated July 11, 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 Red Yeast Rice

What is Red Yeast Rice?

Red Yeast Rice
  • High cholesterol
  • Heart health
  • Metabolic syndrome
  • Statin alternative

Red yeast rice contains monacolin K, which is chemically identical to the prescription statin lovastatin, and it can lower LDL ('bad') cholesterol. Because of this, it carries the same risks as statin drugs, and the amount of active ingredient varies widely between products. Always talk to your pharmacist or doctor before using it, especially if you have liver problems or take other medicines.

Monascus purpureus · Rice fermented with Monascus purpureus yeast · Capsules, tablets, powder

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

Red Yeast Rice: dosing

There is no official standardized dose for red yeast rice, and the amount of active monacolin K varies a lot between products. This makes it hard to know exactly how much you are getting.The safest approach is to follow the directions on the product label and to choose products that are independently tested for purity and citrinin contamination.

From our Red Yeast Rice monograph — the full record covers uses, side effects and every documented interaction.

Read the full Red Yeast Rice 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 & Red Yeast Rice

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

0Major
477Moderate
0Minor
2,352No known interaction
Moderate

477 interactions

Showing 60 of 477 moderate interactions — see all 477 on the Red Yeast Rice page.

No interaction 2,352 drugs checked — show the list
Evidence & sources

Red Yeast Rice References

The 50 references that drive our Red Yeast Rice 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. Hebel SK, ed. Drug Facts and Comparisons. 52nd ed. St. Louis: Facts and Comparisons, 1998.
  2. Heber D, Yip I, Ashley JM, et al. Cholesterol-lowering effects of a proprietary Chinese red-yeast-rice dietary supplement. Am J Clin Nutr 1999;69:231-6. PubMed
  3. Wang J, Lu A, Chi J. Multicenter clinical trial of the serum lipid-lowering effects of a monascus purpureus (red yeast) rice preparation from traditional Chinese medicine. Cur Ther Res 1997;58:964-78. DOI
  4. Wigger-Alberti W, Bauer A, Hipler UC, Elsner P. Anaphylaxis due to Monascus purpureus-fermented rice (red yeast rice). Allergy 1999;54:1330-1.
  5. Prasad GV, Wong T, Meliton G, Bhaloo S. Rhabdomyolysis due to red yeast rice (Monascus purpureus) in a renal transplant recipient. Transplantation 2002;74:1200-1. PubMed
  6. Heber D, Lembertas A, Lu QY, et al. An analysis of nine proprietary Chinese red yeast rice dietary supplements: implications of variability in chemical profile and contents. J Altern Complement Med 2001;7:133-9. PubMed
  7. Mueller PS. Symptomatic myopathy due to red yeast rice. Ann Intern Med 2006;145:474-5. PubMed
  8. Roselle H, Ekatan A, Tzeng J, et al. Symptomatic hepatitis associated with the use of herbal red yeast rice. Ann Intern Med 2008;149:516-7. PubMed
  9. Lapi F, Gallo E, Bernasconi S, et al. Myopathies associated with red yeast rice and liquorice: spontaneous reports from the Italian Surveillance System of Natural Health Products. Br J Clin Pharmacol 2008;66:572-74. PubMed
  10. Becker DJ, Gordon RY, Halbert SC, et al. Red yeast rice for dyslipidemia in statin-intolerant patients: A randomized trial. Ann Intern Med 2009;150:830-9. PubMed
  11. Halbert SC, French B, Gordon RY, et al. Tolerability of red yeast rice (2,400 mg twice daily) versus pravastatin (20 mg twice daily) in patients with previous statin intolerance. Am J Cardiol 2010;105:198-204. PubMed
  12. Gordon RY, Cooperman T, Obermeyer W, Becker DJ. Marked variability of monacolin levels in commercial red yeast rice products: buyer beware! Arch Intern Med 2010;170:1722-7. PubMed
  13. Karl M, Rubenstein M, Rudnick C, Brejda J. A multicenter study of nutraceutical drinks for cholesterol (evaluating effectiveness and tolerability). J Clin Lipidology 2012;6:150-158. PubMed
  14. Huang, J., Frohlich, J., and Ignaszewski, A. P. The impact of dietary changes and dietary supplements on lipid profile. Can J Cardiol 2011;27(4):488-505. PubMed
  15. Grieco, A., Miele, L., Pompili, M., Biolato, M., Vecchio, F. M., Grattagliano, I., and Gasbarrini, G. Acute hepatitis caused by a natural lipid-lowering product: when "alternative" medicine is no "alternative" at all. J Hepatol 2009;50(6):1273-1277. 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 Red Yeast Rice and Sumatriptan Together: Common Questions

Is it safe to take Red Yeast Rice with Sumatriptan?
We do not list a known interaction between Red Yeast Rice 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 Red Yeast Rice and Sumatriptan have any of the same side effects?
Yes — our sources link each of them separately to 4 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.
How was the Red Yeast Rice and Sumatriptan combination checked?
Interactions in our licensed database are recorded against drug classes. Sumatriptan is filed under 4 classifications, and Red Yeast Rice has documented interactions with 6 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 Red Yeast Rice interact with any other medications?
Yes. Red Yeast Rice has 477 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 — Red Yeast Rice 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

Still Have a Question About Sumatriptan and Red Yeast Rice?

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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.