About this item Healthy Origins is a naturally occurring standardized extract of Griffonia simplicifolia containing greater than 99% pure 5 hydroxytryptophan 5 HTP 5-HTP is a precursor of serotonin 5-HT 5 HTP helps to normalize serotonin activity in the body During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.