At a Glance
Dosage
oral
| Level | 4-FMA | 5-APB |
|---|---|---|
| Threshold | 10 mg | 20 mg |
| Light | 25–50 mg | 40–60 mg |
| Common | 50–75 mg | 60–80 mg |
| Strong | 100–125 mg | 80–100 mg |
| Heavy | 125 mg | 100 mg |
Duration
oral
4-FMA
oral
Total: 4 hrs – 8 hrsPeak
Afterglow
Onset20 min – 40 min
Come Up20 min – 40 min
Peak2 hrs – 5 hrs
Offset
Effects
Safety
Interaction: 4-FMA + 5-APB
No direct interaction data available between these substances. This does not mean the combination is safe.
4-FMA — Dangerous Interactions
5-APB — Dangerous Interactions
Frequently Asked Questions
What is the difference between 4-FMA and 5-APB?
4-FMA is classified as a Entactogen, Stimulants (Substituted amphetamines) while 5-APB is classified as a Entactogen, Stimulants (Substituted amphetamines, Substituted benzofurans). They share 6 effects in common, with 3 effects unique to 4-FMA and 27 unique to 5-APB.
Is it safe to combine 4-FMA and 5-APB?
There is no direct interaction data available for combining 4-FMA and 5-APB. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 4-FMA or 5-APB?
At common doses via oral, 4-FMA is typically dosed at 50–75 mg while 5-APB is dosed at 60–80 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.