1BP-LSD

1BP-LSD, also known as 1--LSD, is a psychedelic drug of the lysergamide family related to lysergic acid diethylamide. It is thought to be a prodrug of LSD. The drug was encountered online as a novel designer drug in December 2025. 1BP-LSD has been sold in the form of blotter containing 175 and 200μg per tab. It has been said to be considered to be the official legal successor of 1S-LSD, which was banned in Germany soon before 1BP-LSD's appearance. The effects of 1BP-LSD are said to be similar to those of 1S-LSD and to include visual changes, altered perception of time and space, heightened emotions, and increased creativity. 1BP-LSD is not an explicitly controlled substance in the United States or in Canada.