Nothing is as psychological as LSD.

Mescaline is psychological, but not nearly as much as LSD is. It’s a friendlier experience, but can be just as powerful as LSD.

Mescaline has some similarities with MDMA.

Mescaline makes you feel fantastic. It's one of the most euphoric psychedelics there is. It's hard to have a bad trip when you’re feeling that good. In low doses it’s also said to be an effective aphrodisiac (SWIM can vouch for that).