Anhalonidine
Anhalonidine, also known as N-desmethylpellotine, a naturally occurring tetrahydroisoquinoline alkaloid which can be isolated from certain members of the cactus family, such as Lophophora. It is structurally related to mescaline. Anhalonidine produced no hallucinogenic effects in humans at doses of up to 250mg. However, it has been reported to have a calming or sedative effect instead, with about one-fourth the potency of pellotine and with marked sedation occurring at doses of 100 to 250mg. Anhalonidine has been found to act as a potent inverse agonist of the serotonin 5-HT7 receptor.