N1-Methyl-lysergic acid diethylamide (MLD-41) is a derivative of
LSD
Lysergic acid diethylamide (LSD), also known colloquially as acid, is a potent psychedelic drug. Effects typically include intensified thoughts, emotions, and sensory perception. At sufficiently high dosages LSD manifests primarily mental, vi ...
that has about one-third the psychoactive effects. It has been studied in
cross-tolerance
Cross-tolerance is a phenomenon that occurs when tolerance to the effects of a certain drug produces tolerance to another drug. It often happens between two drugs with similar functions or effects—for example, acting on the same cell receptor o ...
of LSD.
Metabolism of other 1-methylated-ergoloids to their secondary amine derivatives has been frequently noted in mammals.
References
Lysergamides
{{Hallucinogen-stub