At a Glance
Dosage
oral
| Level | 3-FA | 2-FA |
|---|---|---|
| Threshold | 10 mg | 5 mg |
| Light | 20–30 mg | 15–30 mg |
| Common | 30–50 mg | 30–50 mg |
| Strong | 50–70 mg | 50–60 mg |
| Heavy | 70 mg | 60 mg |
Duration
oral
3-FA
oral
Peak
Offset
Afterglow
Onset: 20 min – 1 hrsCome Up: 30 min – 1 hrsPeak: 2 hrs – 3 hrsOffset: 1 hrs – 1.5 hrsAfterglow: 2 hrs – 6 hrs
Total: 4 hrs – 6 hrs
2-FA
oral
Effects
Shared Effects4
Unique to 3-FA
Safety
Interaction: 3-FA + 2-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
3-FA — Dangerous Interactions
2-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 3-FA and 2-FA?
3-FA is classified as a Stimulants (Amphetamine, Substituted amphetamines) while 2-FA is classified as a Stimulants (Substituted amphetamines). They share 4 effects in common, with 4 effects unique to 3-FA and 4 unique to 2-FA.
Is it safe to combine 3-FA and 2-FA?
There is no direct interaction data available for combining 3-FA and 2-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 3-FA or 2-FA?
At common doses via oral, 3-FA is typically dosed at 30–50 mg while 2-FA is dosed at 30–50 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.