Question 1

What is the difference between PMMA and 4-FMA?

Accepted Answer

PMMA is classified as a Entactogen (Amphetamine, Substituted amphetamines) while 4-FMA is classified as a Entactogen, Stimulants (Substituted amphetamines). They share 6 effects in common, with 14 effects unique to PMMA and 1 unique to 4-FMA.

Question 2

Is it safe to combine PMMA and 4-FMA?

Accepted Answer

There is no direct interaction data available for combining PMMA and 4-FMA. This does not mean the combination is safe. Always exercise caution and research thoroughly.

Question 3

Which is stronger, PMMA or 4-FMA?

Accepted Answer

At common doses via oral, PMMA is typically dosed at 100–120 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.

Level	PMMA	4-FMA
Threshold	— mg	10 mg
Light	— mg	25–50 mg
Common	100–120 mg	50–75 mg
Strong	— mg	100–125 mg
Heavy	— mg	125 mg

PMMAvs4-FMA

At a Glance

Dosage

oral

Duration

oral

oral

Effects

Shared Effects6

Unique to PMMA14

Unique to 4-FMA1

Safety

Interaction: PMMA + 4-FMA

PMMA — Dangerous Interactions

4-FMA — Dangerous Interactions

Frequently Asked Questions

	PMMA	4-FMA
Class	Entactogen	Entactogen, Stimulants
Common Dose (oral)	100–120 mg	50–75 mg
Total Duration	—	2.7–6.3 hrs
Routes	oral	oral
Effects	20 documented	7 documented