4F-EPH, a Stimulants, and 3-FMA, a Entactogen, Stimulants, are frequently compared by users looking to understand their relative effects, dosage profiles, and safety considerations. 4F-EPH is classified as a Stimulants while 3-FMA is a Entactogen, Stimulants, meaning they approach altered states through different pharmacological mechanisms. They share 3 documented effects in common, with 17 effects unique to 4F-EPH and 2 unique to 3-FMA. This side-by-side comparison covers dosage, duration, subjective effects, and safety to help you make informed decisions.
| Interaction |
| Caution |
| Level | 4F-EPH | 3-FMA |
|---|---|---|
| Threshold | 5 mg | 5 mg |
| Light | 5–10 mg | 10–20 mg |
| Common | 10–15 mg | 20–35 mg |
| Strong | 15–30 mg | 35–50 mg |
| Heavy | 30 mg | 50 mg |
4F-EPH
Total: 5 hrs – 6 hrs
3-FMA
Total: 3 hrs – 7 hrs
Increased cardiovascular strain and neurotoxicity risk