Drug & supplement interaction

Higenamine + acetaminophen, dextromethorphan, doxylamine

acetaminophen, dextromethorphan, doxylamine brand name: NyQuil.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Higenamine and acetaminophen, dextromethorphan, doxylamine 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

Higenamine and acetaminophen, dextromethorphan, doxylamine

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 acetaminophen, dextromethorphan, doxylamine and Higenamine 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.

Higenamine safety at a glance

Higenamine overall Use caution It acts as a stimulant on the heart and is banned in competitive sports, so it should be used with caution if at all.
Pregnancy Avoid There is no safety data in pregnancy, so it should be avoided.
Breastfeeding Avoid There is no safety data during breastfeeding, so it should be avoided.

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

Still wondering about combining acetaminophen, dextromethorphan, doxylamine and Higenamine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for acetaminophen, dextromethorphan, doxylamine

Interactions in our licensed database are recorded against drug classes, not just single drug names. acetaminophen, dextromethorphan, doxylamine is filed under 4 classifications — including cns depressants, oral drugs. Higenamine has documented interactions with 5 drug classes — the most serious being anticoagulant/antiplatelet drugs (moderate), cytochrome p450 2d6 (cyp2d6) substrates (moderate) and cytochrome p450 3a4 (cyp3a4) substrates (moderate) — and none of acetaminophen, dextromethorphan, doxylamine’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

Higenamine Does Interact With Other Medications

Higenamine has 891 moderate known drug interactions in our database — acetaminophen, dextromethorphan, doxylamine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 891 No known interaction 1,939 (incl. acetaminophen, dextromethorphan, doxylamine)
Taking anything else?

Check Another of Your Medications Against Higenamine

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

What to actually watch for

What Higenamine Itself Has Been Linked To

This is not an interaction — nothing below involves acetaminophen, dextromethorphan, doxylamine. It is the side-effect record for Higenamine on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Higenamine, this list is the first place to look. 3 entries are worth acting on rather than waiting out — marked below.

  • Severe muscle breakdown Worth acting on Additional detail

    “Orally, higenamine might cause rhabdomyolysis. In a case report, a 22-year-old active duty male experienced paraspinal rhabdomyolysis after consuming higenamine-containing supplement (JACK3D micro) at 150% the recommended dose and performing heavy exercise shortly after consumption. Renal function returned to normal after a couple of days; however, severe muscle pain improved only after 3 months.”

    Higenamine · Natural Medicines adverse-effect record, reported in muscle breakdown.

    1 source cited
    1. 95551. Jeter J, DeZee KJ, Kennedy L. A Case of Paraspinal Muscle Rhabdomyolysis in a 22-Year-Old Male After Ingesting a Supplement Containing Higenamine. Mil Med. 2015;180(7):e847-9. PubMed
  • An irregular heartbeat / Chest pain Worth acting on Additional detail

    “Orally, the safety of higenamine has not been studied in high-quality clinical trials. However, higenamine has been shown to have cardiac stimulant effects due to its effect on beta2-adrenoreceptors. In animal models, it appears to significantly increase heart rate; however, it does not appear to increase blood pressure. Higenamine is one of the primary cardioactive constituents in aconite.”

    Higenamine · Natural Medicines adverse-effect record, reported in irregular heartbeat.

    6 sources cited
    1. 18027. Zhang Z, Liu X, Tao Z, et al. Effects of higeramine on hemodynamics and its tolerability and safety, an experimental study. Zhonghua Yi Xue Za Zhi 2002;82:352-5.
    2. 559. Tai YT, But PP, Young K, et al. Cardiotoxicity after accidental herb-induced aconite poisoning. Lancet 1992;340:1254-6. PubMed
    3. 3490. But PP, Tai YT, Young K. Three fatal cases of herbal aconite poisoning. Vet Hum Toxicol 1994;36:212-5.
    4. 15499. Lin CC, Chan TY, Deng JF. Clinical features and management of herb-induced aconitine poisoning. Ann Emerg Med 2004;43:574-9. PubMed
    5. 95552. Zhang N, Lian Z, Peng X, Li Z, Zhu H. Applications of Higenamine in pharmacology and medicine. J Ethnopharmacol. 2017;196:242-252. PubMed
    6. 97577. Cohen PA, Travis JC, Keizers PHJ, Boyer FE, Venhuis BJ. The stimulant higenamine in weight loss and sports supplements. Clin Toxicol (Phila). 2018:1-6. PubMed
  • Shortness of breath Worth acting on Additional detail

    Recorded for Higenamine in the same Natural Medicines adverse-effect record shown under Severe muscle breakdown above.

  • A fast or pounding heartbeat Additional detail

    Recorded for Higenamine in the same Natural Medicines adverse-effect record shown under Severe muscle breakdown above.

  • Muscle pain Additional detail

    Recorded for Higenamine in the same Natural Medicines adverse-effect record shown under Severe muscle breakdown above.

  • Dizziness / Headache Additional detail

    “Orally, higenamine may cause headache.

    Intravenously, higenamine may cause dizziness and headache.”

    Higenamine · Natural Medicines adverse-effect record, reported in cluster headache.

    2 sources cited
    1. 107431. Rasic JS, Ivanovic ND, Andjelkovic MS, et al. Influence of higenamine on exercise performance of recreational female athletes: a randomized double-blinded placebo-controlled trial. Front Psychol 2021;12:633110. PubMed
    2. 97577. Cohen PA, Travis JC, Keizers PHJ, Boyer FE, Venhuis BJ. The stimulant higenamine in weight loss and sports supplements. Clin Toxicol (Phila). 2018:1-6. PubMed

Everything above comes from the Natural Medicines adverse-effect record for Higenamine — expand a row for the licensed statement it rests on. We haven’t matched acetaminophen, dextromethorphan, doxylamine to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for acetaminophen, dextromethorphan, doxylamine.

Everything else you take

See Every Supplement That Interacts With acetaminophen, dextromethorphan, doxylamine

This page covers Higenamine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the acetaminophen, dextromethorphan, doxylamine page lists 106 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Grapefruit (major).

By severity: 8 major · 78 moderate · 20 minor.

From our pharmacist’s overview on the acetaminophen, dextromethorphan, doxylamine page

“NyQuil (acetaminophen, dextromethorphan, doxylamine) is designed to make you drowsy, and that is exactly where most of its supplement interactions live. Seventy-eight of the 106 ingredients on this list add to its sedation, and the eight rated major, alcohol and kava among them, can push a nighttime cold remedy toward serious depressio…”

Reviewed by 2 · Jul 18, 2026

Open the acetaminophen, dextromethorphan, doxylamine interaction page

One more smart check

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

We hold 154 real supplement products containing Higenamine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Higenamine. Even though Higenamine itself has no known interaction with acetaminophen, dextromethorphan, doxylamine, 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 Higenamine and acetaminophen, dextromethorphan, doxylamine 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 Higenamine
Top half

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

29 days ago today
Medication acetaminophen, dextromethorphan, doxylamine
Top 5%

#77 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 Higenamine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Higenamine and acetaminophen, dextromethorphan, doxylamine 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 Higenamine

What is Higenamine?

  • Weight loss and fat burning
  • Pre-workout energy and performance
  • Appetite suppression
  • Athletic stimulant
  • Traditional medicine remedies

Higenamine is a plant-based stimulant compound added to many weight-loss and pre-workout supplements, but there is very little human evidence that it works and real concerns about heart and blood pressure effects. It is banned in sports by the World Anti-Doping Agency (WADA), and product labels often list inaccurate amounts, so most people should approach it with caution and talk to a pharmacist or doctor first.

Plant-derived alkaloid (found in plants such as Aconitum, Nelumbo/lotus, and Annona species) · Capsules, tablets, powders, pre-workout and fat-burner blends

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

Higenamine: dosing

There is no established or proven safe dose of higenamine. Supplement products vary widely, and testing has shown that the labeled amount is often unreliable, so it is hard to know how much you are actually taking.Because of this uncertainty and the potential heart effects, we do not recommend a specific dose.

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

Read the full Higenamine monograph & all interactions
Keep checking

Other Drugs & Higenamine

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

0Major
891Moderate
0Minor
1,938No known interaction
891 Moderate 1,938 No interaction
Moderate

891 interactions

Showing 60 of 891 moderate interactions — see all 891 on the Higenamine page.

No interaction 1,938 drugs checked — show the list

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

Showing the 60 most looked-up of 1,938 medications checked with no known interaction — see the full Higenamine list.

See the full Higenamine interactions page
See every supplement checked against acetaminophen, dextromethorphan, doxylamine, ranked by severity
Evidence & sources

Higenamine References

The 14 references that drive our Higenamine 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. Tai YT, But PP, Young K, et al. Cardiotoxicity after accidental herb-induced aconite poisoning. Lancet 1992;340:1254-6. PubMed
  2. But PP, Tai YT, Young K. Three fatal cases of herbal aconite poisoning. Vet Hum Toxicol 1994;36:212-5.
  3. Lin CC, Chan TY, Deng JF. Clinical features and management of herb-induced aconitine poisoning. Ann Emerg Med 2004;43:574-9. PubMed
  4. Wagner H, Reiter M, Ferstl W. New drugs with cardiotonic activity. Part 1. Chemistry and pharmacology of the cardiotonic active principle of Annona squamosa L. Planta Med 1980;40:77-85.
  5. Park CW, Chang KC, Lim JK. Effects of higenamine on isolated heart adrenoceptor of rabbit. Arch Int Pharmacodyn Ther 1984;267:279-88.
  6. Liu WH, Zhou YP, Zeng GY. Effects of dl-demethylcoclaurine on experimental heart failure. Acta Pharm Sinica 1988;23:81-5.
  7. Yun-Choi HS, Pyo MK, Park KM, et al. Anti-thrombotic effects of higenamine. Planta Med 2001;67:619-22. PubMed
  8. Zhang Z, Liu X, Tao Z, et al. Effects of higeramine on hemodynamics and its tolerability and safety, an experimental study. Zhonghua Yi Xue Za Zhi 2002;82:352-5.
  9. Kam SC, Do JM, Choi JH, et al. The relaxation effect and mechanism of action of higenamine in the rat corpus cavernosum. Int J Impot Res 2012;24:77-83. PubMed
  10. Liu Y, Santillo MF. Cytochrome P450 2D6 and 3A4 enzyme inhibition by amine stimulants in dietary supplements. Drug Test Anal. 2016;8(3-4):307-10. PubMed
  11. Jeter J, DeZee KJ, Kennedy L. A Case of Paraspinal Muscle Rhabdomyolysis in a 22-Year-Old Male After Ingesting a Supplement Containing Higenamine. Mil Med. 2015;180(7):e847-9. PubMed
  12. Zhang N, Lian Z, Peng X, Li Z, Zhu H. Applications of Higenamine in pharmacology and medicine. J Ethnopharmacol. 2017;196:242-252. PubMed
  13. Cohen PA, Travis JC, Keizers PHJ, Boyer FE, Venhuis BJ. The stimulant higenamine in weight loss and sports supplements. Clin Toxicol (Phila). 2018:1-6. PubMed
  14. Rasic JS, Ivanovic ND, Andjelkovic MS, et al. Influence of higenamine on exercise performance of recreational female athletes: a randomized double-blinded placebo-controlled trial. Front Psychol 2021;12:633110. 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 Higenamine and acetaminophen, dextromethorphan, doxylamine Together: Common Questions

Is it safe to take Higenamine with acetaminophen, dextromethorphan, doxylamine?
We do not list a known interaction between Higenamine and acetaminophen, dextromethorphan, doxylamine. 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.
How was the Higenamine and acetaminophen, dextromethorphan, doxylamine combination checked?
Interactions in our licensed database are recorded against drug classes. acetaminophen, dextromethorphan, doxylamine is filed under 4 classifications, and Higenamine has documented interactions with 5 drug classes — none of acetaminophen, dextromethorphan, doxylamine'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 Higenamine interact with any other medications?
Yes. Higenamine has 891 documented drug interactions in our database — acetaminophen, dextromethorphan, doxylamine 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 acetaminophen, dextromethorphan, doxylamine interact with any supplements?
Yes. acetaminophen, dextromethorphan, doxylamine has documented interactions with 106 supplements in our database — Higenamine is not one of them. The acetaminophen, dextromethorphan, doxylamine interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Higenamine monograph Uses, safety profile, and every drug interaction in one place acetaminophen, dextromethorphan, doxylamine supplement interactions Every supplement checked against acetaminophen, dextromethorphan, doxylamine, 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 14 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

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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.