4F-MPH, 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-MPH is classified as a Stimulants while 3-FMA is a Entactogen, Stimulants, meaning they approach altered states through different pharmacological mechanisms. They share 5 documented effects in common, with 34 effects unique to 4F-MPH and 3 unique to 3-FMA. This side-by-side comparison covers dosage, duration, subjective effects, and safety to help you make informed decisions.
| Effects | 39 documented | 8 documented |
| Interaction | Caution | |
| Level | 4F-MPH | 3-FMA |
|---|---|---|
| Threshold | 5 mg | 5 mg |
| Light | 5–10 mg | 10–20 mg |
| Common | 10–15 mg | 20–35 mg |
| Strong | 15–20 mg | 35–50 mg |
| Heavy | 20 mg | 50 mg |
| Level | Dose |
|---|---|
| Threshold | 5 mg |
| Light | 5–8 mg |
| Common | 8–14 mg |
| Strong | 14–20 mg |
| Heavy | 20 mg |
4F-MPH
3-FMA
Increased cardiovascular strain and neurotoxicity risk