4-FMA, a Entactogen, Stimulants, and MDA, a Psychedelic, Entactogen, Stimulants, are frequently compared by users looking to understand their relative effects, dosage profiles, and safety considerations. 4-FMA is classified as a Entactogen, Stimulants while MDA is a Psychedelic, Entactogen, Stimulants, meaning they approach altered states through different pharmacological mechanisms. They share 6 documented effects in common, with 1 effects unique to 4-FMA and 48 unique to MDA. This side-by-side comparison covers dosage, duration, subjective effects, and safety to help you make informed decisions.
| Level | 4-FMA | MDA |
|---|---|---|
| Threshold | 10 mg | 20 mg |
| Light | 25–50 mg | 40–60 mg |
| Common | 50–75 mg | 60–100 mg |
| Strong | 100–125 mg | 100–145 mg |
| Heavy | 125 mg | 145 mg |
4-FMA
Total: 4 hrs – 8 hrs
MDA
Total: 5 hrs – 8 hrs
No direct interaction data available between these substances. This does not mean the combination is safe.