2C-B is a synthetically produced hallucinogen that is most closely related to mescaline. It acts primarily on the central serotonin receptors of the brain. Serotonin is a chemical derived from the amino acid tryptophan, and widely distributed in tissues. It acts as a neurotransmitter, constricts blood vessels at injury sites, and may affect emotional states. 2C-B works by interfering with serotonin in the brain.