Tryptophan is an amino acid your body cannot produce. In the human body, tryptophan has been shown to: improve sleep, enhance mood, regulate stress. Serotonin is a hormone that cares for the connection between nerve cells. It is naturally found in the brain and digestive track and it positively impacts your mood and sleep. To produce and maintain optimum serotonin levels your body requires tryptophan. It is recommended to take one (1) to three (3) capsules on an empty stomach or as directed by a medical practitioner. For maximum absorption, to be taken with a small amount of carbohydrate, such as diluted juice. For maximum benefits, to be taken separately from proteins and amino acids. If you are taking medication for depression (for example, MAOI and SSRI antidepressants), please consult your medical practitioner before taking this product. Concomitant use of L-tryptophan with antidepressant medications has the potential to increase the risk of serotonin syndrome. It manifests itself through symptoms like confusion, sweating, agitation, nausea, involuntary muscle contractions and racing heartbeat. Do not use L-tryptophan before driving or operating heavy machinery. Keep out of reach of children. Do not exceed recommended dose. Do not purchase if outer seal is broken or damaged. If you are undergoing treatment for a medical condition or if you are pregnant or lactating, please consult with your medical practitioner first. A food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Store tightly closed in a cool and dry place.