EPT

N-Ethyl-N-propyltryptamine (EPT) is a synthetic psychedelic tryptamine with an asymmetric N-alkyl substitution — one ethyl and one propyl group on the terminal nitrogen. This places it in the structural space between DET (diethyl) and DPT (dipropyl), and the asymmetric substitution pattern distinguishes it from the symmetric dialkyl analogs. EPT has been documented primarily through community experience reports, with minimal formal pharmacological research.

Community reports characterize EPT as a moderately potent tryptamine with a psychedelic profile broadly consistent with the class — visual phenomena, emotional amplification, altered cognition and time perception — but with a character that some users describe as somewhat distinct from the better-known symmetric tryptamines. Reddit reports document experiences with 4-AcO-EPT (the 4-acetoxy prodrug) and 4-HO-EPT, suggesting interest in the EPT series across its hydroxy, acetoxy, and base forms. Duration is approximately 3–5 hours.

EPT represents an interesting structural data point in the tryptamine pharmacology literature, occupying the asymmetric mixed ethyl-propyl substitution space that has received less documentation than the symmetric analogs. Its availability is limited compared to more commonly encountered tryptamines, and formal safety data is essentially absent.