Description
4FMA , 4-Fluoromethamphetamine (abbreviated 4-FMA) is a synthetic substituted amphetamine with stimulant, entactogenic and purported nootropic effects. Many users describe it subjectively as displaying properties and effects somewhere in spectrum between 4-FA and 2-FMA, but with subtle variations in its pharmacodynamics, kinetics and side effect profile that make it less desirable than either.

4FMA is rarely found on the street and is usually sold as a rare grey area research chemical through online vendors, occasionally along with related designer stimulants such as 2-fluoroamphetamine (2-FA), 3-fluoroamphetamine (3-FA) and 4-fluoroamphetamine (4-FA). Of these, it is one of the least potent and popular fluorinated designer amphetamine in the series.

4FMA ,4-Fluoromethamphetamine (4-FMA) is a synthetic molecule of the substituted amphetamine family. Molecules of this class contain a phenethylamine core featuring a phenyl ring bound to an amino (NH2) group through an ethyl chain with an additional methyl substitution at Rα. The term “amphetamine” is the contracted form of alpha-methylphenethylamine. 4-fluoromethamphetamine contains a fluorine atom at R4 of its phenyl ring and is therefore a fluorinated analogue of methamphetamine.

4FMA,Similar to its structural analog 4-FA, 4-Fluoromethamphetamine is thought to act as a releasing agent and reuptake inhibitor of dopamine, serotonin, and norepinephrine, producing stimulating amphetamine-like effects at lower doses and moderate euphoric, entactogenic effects similar to MDMA at dosages above 125mg, albeit much less mild. The mechanism of action of 4-FMA effectively boosts the levels of the norepinephrine, dopamine, and serotonin neurotransmitters in higher doses in the brain by binding to and partially blocking the transporter proteins that normally clear these monoamines from the synaptic cleft. This allows dopamine, norepinephrine, and serotonin to accumulate within various regions of the brain, including its reward pathways, resulting in stimulating, euphoric and entactogenic effects

4FMA , 4-Fluoromethamphetamine (abbreviated 4-FMA) is a synthetic substituted amphetamine with stimulant, entactogenic and purported nootropic effects. Many users describe it subjectively as displaying properties and effects somewhere in spectrum between 4-FA and 2-FMA, but with subtle variations in its pharmacodynamics, kinetics and side effect profile that make it less desirable than either.