5-HTP(5-Hydroxytryptophan) is a natural herbal prescription ingredients from Griffonia simplicifolia, extracted from the seeds of a West African drug plants,5-HTP is an effective antidepressants, and it do not contain some undesirable side effects.Odorless and taste slightly salty. 5-HTP soluble in hot alcohol, dilute alkali solution and dilute hydrochloric acid, slightly soluble in water, insoluble in chloroform, soluble in hot water