3-FEA

3-Fluoroethylamphetamine (3-FEA) is a fluorinated analog of ethylamphetamine in which a fluorine atom is placed at the 3-position of the phenyl ring. As the N-ethyl homolog of 3-FA, it belongs to both the Stimulants and Entactogen psychoactive classes, reflecting a dual pharmacological character that combines stimulant activity with meaningful serotonergic (empathogenic) properties. This makes 3-FEA more closely related in character to compounds like 3-FMA and 4-FA than to purely dopaminergic stimulants like 2-FMA.

Community experience reports describe 3-FEA as producing a distinctive blend of stimulation and empathogenic warmth — more overtly MDMA-adjacent than 3-FA but less intensely so than 4-FA. A documented experience report (posted at 27mg oral dose) describes onset at approximately 2 hours, with effects characterized by emotional openness and mild visual brightness alongside stimulant characteristics. Reddit threads compare 3-FEA to 4-FA and note that its effects are described as "neat" and generally positive at appropriate doses.

The N-ethyl substitution (compared to N-methyl in methamphetamine analogs or the N-unsubstituted amphetamine) can affect CNS penetrance and metabolite profiles — a consideration relevant to both effect duration and potential toxicity. As with all research chemical entactogens, serotonergic neurotoxicity risk with heavy use, drug interaction hazards, and the need for infrequent use are primary safety considerations.