At a Glance
Dosage
oral
| Level | 5-APB | 4-FA |
|---|---|---|
| Threshold | 20 mg | 40 mg |
| Light | 40–60 mg | 40–100 mg |
| Common | 60–80 mg | 100–130 mg |
| Strong | 80–100 mg | 130–150 mg |
| Heavy | 100 mg | 150 mg |
Duration
oral
5-APB
oral
Total: 5 hrs – 8 hrsAfterglow
Onset20 min – 1 hrs
Come Up45 min – 1.5 hrs
Peak2 hrs – 4 hrs
Offset
Effects
Safety
Interaction: 5-APB + 4-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
5-APB — Dangerous Interactions
4-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 5-APB and 4-FA?
5-APB is classified as a Entactogen, Stimulants (Substituted amphetamines, Substituted benzofurans) while 4-FA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 26 effects in common, with 7 effects unique to 5-APB and 29 unique to 4-FA.
Is it safe to combine 5-APB and 4-FA?
There is no direct interaction data available for combining 5-APB and 4-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 5-APB or 4-FA?
At common doses via oral, 5-APB is typically dosed at 60–80 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.