As nouns the difference between mescalin and mescaline
is that mescalin is alternative form of lang=en while mescaline is a psychedelic drug of the phenethylamine class found naturally in several species of cacti, including peyote species: Lophophora williamsii, the San Pedro cactus species: Echinopsis pachanoi, and the Peruvian torch species: Echinopsis peruviana.
mescaline
Noun
(-)
A psychedelic drug of the phenethylamine class found naturally in several species of cacti, including peyote .