Nutri Advanced 5-HTP is a formulation of 5-Hydroxytryptophan, which is a precursor of serotonin. Serotonin is a neurotransmitter which regulates numerous important bodily functions, in particular brain and nerve function. Approximately 70% of oral 5-HTP is converted to serotonin compared with around 3% of L-tryptophan. Serotonin may be converted in the body to melatonin, important in regulating the sleep-wake cycle. 5- Nutri 5-HTP is sourced from the plant Griffonia simplicifolia.Directions: One (1) - 2 capsules daily, or as directed. Up to 600mg per day may be taken, although loose stools may result from higher doses. For children, the dosage of 5-HTP should be reduced from the adult dose to 20mg for every 10kg of body weight.Ingredients:Each capsule typically contains: 5-HTP (5-Hydroxytryptophan); 50 mg Other ingredients: Cetyl alcohol, Hydroxypropyl Methylcellulose (capsule), Lecithin, Rice flour, Silicon dioxide, Tricalcium phosphate.Caution: Safety has not been established in pregnancy or whilst breastfeeding. Consult with a medical Doctor if taking antidepressant medication.