This product contains 5-hydroxytryptophan a naturally occurring amino acid. Serotonin naturally can be found in Walnuts, Dates, Figs, Pawpaws, Tomatoes, Avocados, Aubergines & Nettles. Contra-Indications If pregnant or breast feeding, consult your health care practitioner before using. For more information on this product contact your healthcare practitioner. This product should not be used as a substitute for a varied diet. Directions Recommended dose 1 capsule per day with a meal. Do not exceed this recommended dose unless prescribed by your practitioner.