At a Glance
Dosage
oral
| Level | 3-FEA | 4-FA |
|---|---|---|
| Threshold | 15 mg | 40 mg |
| Light | 20–35 mg | 40–100 mg |
| Common | 35–70 mg | 100–130 mg |
| Strong | 70–90 mg | 130–150 mg |
| Heavy | 90 mg | 150 mg |
Only in 3-FEA
insufflated
| Level | Dose |
|---|---|
| Threshold | 15 mg |
Duration
oral
3-FEA
oral
Total: 4 hrs – 6 hrsPeak
Offset
Afterglow
Onset20 min – 1 hrs
Come Up30 min – 1 hrs
Peak1.5 hrs – 2.5 hrs
Effects
Safety
Interaction: 3-FEA + 4-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
3-FEA — Dangerous Interactions
4-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 3-FEA and 4-FA?
3-FEA is classified as a Entactogen, Stimulants (Amphetamine, Substituted amphetamines) while 4-FA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 34 effects in common, with 5 effects unique to 3-FEA and 21 unique to 4-FA.
Is it safe to combine 3-FEA and 4-FA?
There is no direct interaction data available for combining 3-FEA and 4-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 3-FEA or 4-FA?
At common doses via oral, 3-FEA is typically dosed at 35–70 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.