Lysergamides Wikipedia1P-ETH-LAD (1-Propionyl-6-ethyl-6-nor-lysergic acid diethylamide) is believed to function a prodrug for ETH-LAD — one of the stronger members of the lysergamide household. 1B-LSD (1-butyryl-lysergic acid diethylamide) is an acetylated model of LSD. Some, similar to ETH-LAD, seem to have a stronger efficiency than LSD, whereas others, similar to 2-Bromo-LSD may
