Mephentermine: uses, dosing, side effects & brands
Mephentermine is a medicine sold in the U.S. under one brand. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Available as
- Injectable
- Sold as
- Wyamine Sulfate
- Prescription?
- Prescription only
- Generic available?
- Not in our catalog
Every mephentermine product we track (1)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
Only one: Wyamine Sulfate.
What people report to the FDA about mephentermine
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 1 reports naming mephentermine, and the FDA flagged 100% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- abasia1 reports
- blood pressure abnormal1 reports
- fatigue1 reports
- hypersomnia1 reports
- myalgia1 reports
- pain in extremity1 reports
- rash1 reports
- renal disorder1 reports
Read these as a signal, not a rate. A report does not mean mephentermine caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 25, 2026.
Related calculators
Frequently asked questions
Can you take mephentermine with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run mephentermine against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What forms does mephentermine come in?
Across the brands we track, mephentermine is currently marketed as injectable, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic mephentermine?
We do not currently list a generic-labelled mephentermine product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.
Cite this page
- APA
- pharmaranks. (2026, July 24). Mephentermine: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/mephentermine
- MLA
- “Mephentermine: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/mephentermine.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for mephentermine on DailyMed (NIH) ↗.