Tryptamine is a monoamine alkaloid found in plants, fungi, and animals. It contains an indole ring structure, and is structurally similar to the amino acid tryptophan, from which it derives its name.

4F 4PP oxalate is a 5-HT2A antagonist.

Homoeriodictyol, a naturally occurring, bitter-masking flavanone, as a promising agent to increase appetite and food intake. The flavanone homoeriodictyol can increase SGLT-1-mediated glucose uptake but decrease serotonin release in differentiated Caco-2 cells.In contrast to other polyphenols, the flavanon Homoeriodictyol promotes glucose uptake by 29.0 ± 3.83% at a concentration of 100 μM.