At a Glance
Dosage
oral
| Level | 4-FMA | MDMA |
|---|---|---|
| Threshold | 10 mg | 20 mg |
| Light | 25–50 mg | 20–80 mg |
| Common | 50–75 mg | 80–120 mg |
| Strong | 100–125 mg | 120–150 mg |
| Heavy | 125 mg | 150 mg |
Duration
oral
4-FMA
oral
Peak
Afterglow
Onset: 20 min – 40 minCome Up: 20 min – 40 minPeak: 2 hrs – 5 hrsOffset: 1 hrs – 2 hrsAfterglow: 3 hrs – 12 hrs
Total: 4 hrs – 8 hrs
MDMA
oral
Effects
Shared Effects7
Safety
Interaction: 4-FMA + MDMA
No direct interaction data available between these substances. This does not mean the combination is safe.
4-FMA — Dangerous Interactions
MDMA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 4-FMA and MDMA?
4-FMA is classified as a Entactogen, Stimulants (Substituted amphetamines) while MDMA is classified as a Entactogen, Stimulants (Amphetamine, MDxx, Substituted amphetamines). They share 7 effects in common, with 0 effects unique to 4-FMA and 63 unique to MDMA.
Is it safe to combine 4-FMA and MDMA?
There is no direct interaction data available for combining 4-FMA and MDMA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 4-FMA or MDMA?
At common doses via oral, 4-FMA is typically dosed at 50–75 mg while MDMA is dosed at 80–120 mg. However, "stronger" depends on context — potency, subjective intensity, and duration all factor in. These substances have different pharmacological profiles and comparing raw potency is not straightforward.