Drug & supplement interaction

Beta-methylphenethylamine (bmpea) + Acetaminophen, Pseudoephedrine

Acetaminophen, Pseudoephedrine brand names: Sinutab, Tylenol Sinus, Sudafed Sinus, Tylenol Sinus Ex Strength, Children's Tylenol Sinus, and others.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Beta-methylphenethylamine (bmpea) has a moderate interaction with Acetaminophen, Pseudoephedrine. Theoretically, taking BMPEA with other stimulant drugs might increase the risk of adverse cardiovascular effects.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
Know someone taking this? Share
Facebook Post Reddit Email
On this page
Interaction report

Beta-methylphenethylamine (bmpea) and Acetaminophen, Pseudoephedrine

Here is the interaction we found between these two, with the evidence behind it.

Moderate

STIMULANT DRUGS

Why this applies to Acetaminophen, Pseudoephedrine

Acetaminophen, Pseudoephedrine falls under STIMULANT DRUGS — the group Beta-methylphenethylamine (bmpea) interacts with.

Theoretically, taking BMPEA with other stimulant drugs might increase the risk of adverse cardiovascular effects.
BMPEA is thought to have stimulant effects, including cardiovascular effects such as hypertension, tachycardia, and cardiac arrest.
Severity Moderate Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the thing to know about this combination: the pseudoephedrine in your sinus product is itself a stimulant. It works by tightening blood vessels to clear a stuffy nose, but it can also nudge up your heart rate and blood pressure. BMPEA is a hidden amphetamine-like stimulant, so pairing the two means you're stacking two stimulants on top of each other.

On paper, that could add up to a jittery feeling, a racing or pounding heartbeat, higher blood pressure, or trouble sleeping. The acetaminophen piece isn't the concern here. I'll be straight with you, this is based on how these compounds work rather than solid studies, but since BMPEA isn't a safe or well-tested ingredient anyway, I'd steer clear and check with your pharmacist first.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Cohen PA, Bloszies C, Yee C, Gerona R. An amphetamine isomer whose efficacy and safety in humans has never been studied, ß-methylphenylethylamine (BMPEA), is found in multiple dietary supplements. Drug Test Anal. 2015 Apr 7. PubMed
  2. Brown DH, Hansson R, Oosthuizen F, et al. ß-Methylphenylethylamines: common fragmentation pathways with amphetamines in electrospray ionization collision-induced dissociation. Drug Test Anal 2016;8:344-50.

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction 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.
  • PossibleInteraction 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.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Beta-methylphenethylamine (bmpea) Also Interacts With Other Medications

Beta-methylphenethylamine (bmpea) has 812 moderate known drug interactions in our database — the Acetaminophen, Pseudoephedrine one above is one of them. If you take anything else, check it against the full list below.

Moderate 812 No known interaction 2,018 (incl. Acetaminophen, Pseudoephedrine)
Taking anything else?

Check Another of Your Medications Against Beta-methylphenethylamine (bmpea)

Covers the 2,830 medications we’ve checked against Beta-methylphenethylamine (bmpea). Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Acetaminophen, Pseudoephedrine

This page covers Beta-methylphenethylamine (bmpea) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Acetaminophen, Pseudoephedrine page lists 197 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Beer (major), Ephedra (major) and Peyote (major).

By severity: 9 major · 149 moderate · 39 minor.

From our pharmacist’s overview on the Acetaminophen, Pseudoephedrine page

“Nine of the 197 supplement interactions on file for acetaminophen with pseudoephedrine (Tylenol Sinus, Sudafed Sinus, Sinutab) carry a major rating, so treat this page with genuine care before you pair the medicine with anything else. Two problems drive the list.”

Reviewed by 2 · Jul 18, 2026

Open the Acetaminophen, Pseudoephedrine interaction page

How much people look this up

Where Beta-methylphenethylamine (bmpea) and Acetaminophen, Pseudoephedrine 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 Beta-methylphenethylamine (bmpea)
Steady interest

#1,380 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Acetaminophen, Pseudoephedrine
Top 25%

#346 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.

Supplement

About Beta-methylphenethylamine (bmpea)

What is Beta-methylphenethylamine (bmpea)?

  • Weight loss
  • Pre-workout energy
  • Athletic performance
  • Appetite suppression
  • Mental focus

Beta-methylphenethylamine (BMPEA) is a synthetic stimulant chemically similar to amphetamine that has been found in some weight-loss and sports supplements, often without being clearly listed on the label. It is not an approved or well-studied dietary ingredient, and regulators have warned that it may carry real cardiovascular risks. Because of safety concerns and the lack of human research, it is best avoided.

Read the full Beta-methylphenethylamine (bmpea) monograph & all interactions
Keep checking

Other Drugs & Beta-methylphenethylamine (bmpea)

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

0Major
812Moderate
0Minor
2,017No known interaction
812 Moderate 2,017 No interaction
Moderate

812 interactions

Showing 60 of 812 moderate interactions — see all 812 on the Beta-methylphenethylamine (bmpea) page.

No interaction 2,017 drugs checked — show the list

We also checked Beta-methylphenethylamine (bmpea) against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,017 medications checked with no known interaction — see the full Beta-methylphenethylamine (bmpea) list.

See the full Beta-methylphenethylamine (bmpea) interactions page
See every supplement checked against Acetaminophen, Pseudoephedrine, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Beta-methylphenethylamine (bmpea) monograph › Uses, safety, and every drug interaction in one place Acetaminophen, Pseudoephedrine supplement interactions › Every supplement checked against Acetaminophen, Pseudoephedrine, 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 Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Beta-methylphenethylamine (bmpea) and Acetaminophen, Pseudoephedrine Together: Common Questions

Can you take Beta-methylphenethylamine (bmpea) with Acetaminophen, Pseudoephedrine?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Beta-methylphenethylamine (bmpea) and Acetaminophen, Pseudoephedrine interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Acetaminophen, Pseudoephedrine and Beta-methylphenethylamine (bmpea)?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.