Tryptophanamide belongs to the class of organic compounds known as tryptamines and derivatives. Tryptophanamide has been detected in multiple biofluids such as urine and blood.

Cholestyramine, a bile acid-binding resin, inhibits intestinal bile acid absorption which results in the increasing bile acid synthesis from cholesterol.

D-3263 hydrochloride is enteric-coated, orally bioavailable (transient receptor potential melatonin member 8) TRPM8 agonist.