At a Glance
Dosage
oral
| Level | 4F-MPH | 3-FA |
|---|---|---|
| Threshold | 5 mg | 10 mg |
| Light | 5–10 mg | 20–30 mg |
| Common | 10–15 mg | 30–50 mg |
| Strong | 15–20 mg | 50–70 mg |
| Heavy | 20 mg | 70 mg |
Only in 4F-MPH
insufflated
| Level | Dose |
|---|---|
| Threshold | 5 mg |
Duration
oral
4F-MPH
oral
Total: 4 hrs – 8 hrsPeak
Afterglow
Onset30 min – 1 hrs
Peak2 hrs – 4 hrs
Offset1 hrs – 2 hrs
Afterglow5 hrs – 10 hrs
3-FA
Effects
Safety
Interaction: 4F-MPH + 3-FA
No direct interaction data available between these substances. This does not mean the combination is safe.
4F-MPH — Dangerous Interactions
3-FA — Dangerous Interactions
Frequently Asked Questions
What is the difference between 4F-MPH and 3-FA?
4F-MPH is classified as a Stimulants (Substituted phenidates) while 3-FA is classified as a Stimulants (Amphetamine, Substituted amphetamines). They share 9 effects in common, with 30 effects unique to 4F-MPH and 3 unique to 3-FA.
Is it safe to combine 4F-MPH and 3-FA?
There is no direct interaction data available for combining 4F-MPH and 3-FA. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, 4F-MPH or 3-FA?
At common doses via oral, 4F-MPH is typically dosed at 10–15 mg while 3-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.