At a Glance
Dosage
oral
| Level | 4-FMA | 4-FA |
|---|---|---|
| Threshold | 10 mg | 40 mg |
| Light | 25–50 mg | 40–100 mg |
| Common | 50–75 mg | 100–130 mg |
| Strong | 100–125 mg | 130–150 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
4-FA
oral
Effects
Safety
Interaction: 4-FMA + 4-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
4-FMA — Dangerous Interactions
4-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 4-FMA and 4-FA?
4-FMA is classified as a Entactogen, Stimulants (Substituted amphetamines) while 4-FA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 6 effects in common, with 1 effects unique to 4-FMA and 31 unique to 4-FA.
Is it safe to combine 4-FMA and 4-FA?
There is no direct interaction data available for combining 4-FMA and 4-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 4-FMA or 4-FA?
At common doses via oral, 4-FMA is typically dosed at 50–75 mg while 4-FA is dosed at 100–130 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.