At a Glance
Dosage
oral
| Level | MDEA | 4-FA |
|---|---|---|
| Threshold | 40 mg | 40 mg |
| Light | 70–120 mg | 40–100 mg |
| Common | 120–180 mg | 100–130 mg |
| Strong | 180–225 mg | 130–150 mg |
| Heavy | 225 mg | 150 mg |
Duration
oral
MDEA
oral
Afterglow
Onset: 20 min – 1 hrsCome Up: 15 min – 30 minPeak: 1.5 hrs – 2 hrsOffset: 1 hrs – 2 hrsAfterglow: 12 hrs – 48 hrs
Total: 3 hrs – 6 hrs
4-FA
oral
Effects
Safety
Interaction: MDEA + 4-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
MDEA — Dangerous Interactions
4-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between MDEA and 4-FA?
MDEA is classified as a Entactogen (Amphetamine, MDxx, Substituted amphetamines) while 4-FA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 31 effects in common, with 11 effects unique to MDEA and 6 unique to 4-FA.
Is it safe to combine MDEA and 4-FA?
There is no direct interaction data available for combining MDEA and 4-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, MDEA or 4-FA?
At common doses via oral, MDEA is typically dosed at 120–180 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.