Methylserotonin, or methyl-5-hydroxytryptamine (methyl-5-HT), may refer to:
5-Methoxytryptamine (5-MeO-T; O-methylserotonin; O-Me-5-HT) 2-Methyl-5-hydroxytryptamine (2-Me-5-HT; 2-methylserotonin) α-Methylserotonin (α-methyl-5-hydroxytryptamine; α-methyl-5-HT; α-Me-5-HT) N-Methylserotonin (NMS; N-methyl-5-hydroxytryptamine; N-Me-5-HT)
See also Substituted tryptamine Dimethylserotonin Trimethylserotonin Tetramethylserotonin Methyltryptamine Methyl-DMT Methylpsilocin Methyl-5-MeO-DMT