4-FA
Overview
4-Fluoroamphetamine (4-FA; 4-FMP; PAL-303; "Flux"), also known as para-fluoroamphetamine (PFA) is a psychoactive research chemical of the phenethylamine and substituted amphetamine chemical classes. It produces stimulant and entactogenic effects.
As a recreational drug, 4-FA is sometimes sold along with related compounds such as 2-fluoroamphetamine and 4-fluoromethamphetamine.
Effects
At lower doses (30mg) gentle stimulation, slight entactogenesis, enhanced senses, feeling of well being.
At higher doses (empirically untested), euphoria, increased energy, desire to be social, etc.
At all doses, anorexia.
Dangers
Not many studies about it. May accumulate in fatty tissue. Higher doses, like all stimulants will probably give uncomfortable overstimulation and give the cardiovascular system unecessary strain.
Neurotoxicity
Unlike 4-CA and 4-BA, 4-FA does not cause long-term depletion of brain serotonin. Little else is known about 4-FA.
Personal observations and commentary
At 30mg I have found no adverse effects at all. There was no hangover.
You need to keep in mind that like MDMA, this substance will mess with your serotonergic system. Unlike MDMA, it does not appear to cause any damage. However, it would still be wise to space usage apart by a month, preferably more.