ETFELA, also known as N-ethyl-N-(2,2,2-trifluoroethyl)lysergamide, is an analogue of lysergic acid diethylamide (LSD) first synthesized by Jason C. Parrish as part of the research team led by David E. Nichols. In studies in vitro, it was found to be slightly more potent than LSD itself.
Analogues of ETFELA include LSD, EcPLA, EiPLA, MiPLA, FLUORETH-LAD (FE-LAD), and FP-LAD, among others.