At a Glance
Dosage
oral
| Level | MDPV | 4-FMA |
|---|---|---|
| Threshold | 2 mg | 10 mg |
| Light | 4–8 mg | 25–50 mg |
| Common | 8–14 mg | 50–75 mg |
| Strong | 14–25 mg | 100–125 mg |
| Heavy | 25 mg | 125 mg |
Duration
oral
MDPV
oral
Afterglow
Onset: 15 min – 30 minPeak: 1 hrs – 4 hrsOffset: 30 min – 2 hrsAfterglow: 2 hrs – 48 hrs
Total: 2 hrs – 7 hrs
4-FMA
oral
Peak
Effects
Shared Effects4
Unique to MDPV
Safety
Interaction: MDPV + 4-FMA
No direct interaction data available between these substances. This does not mean the combination is safe.
MDPV — Dangerous Interactions
4-FMA — Dangerous Interactions
Frequently Asked Questions
What is the difference between MDPV and 4-FMA?
MDPV is classified as a Entactogen, Stimulants (MDxx, Substituted cathinones, Substituted pyrrolidines) while 4-FMA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 4 effects in common, with 5 effects unique to MDPV and 3 unique to 4-FMA.
Is it safe to combine MDPV and 4-FMA?
There is no direct interaction data available for combining MDPV and 4-FMA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, MDPV or 4-FMA?
At common doses via oral, MDPV is typically dosed at 8–14 mg while 4-FMA is dosed at 50–75 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.