Feeling not quite yourself? Keep your mood balanced and appetite under control all day. Natrol’s 5-HTP Time Release slowly and steadily releases 5-HTP over a period of 10 hours. Today’s stress-filled lifestyles and dietary practices may negatively alter your serotonin metabolism which can cause irritability and even depression. Regular use of Natrol® 5-HTP can help provide a more positive and balanced attitude needed to help you maintain a healthy outlook and keep your diet goals by having greater appetite control. 5-HTP (5-Hydroxytryptophan) is a drug-free and naturally occurring plant-derived amino acid that participates in the body’s synthesis of serotonin. 5-HTP is the direct precursor to serotonin. Natrol® 5-HTP works in the brain and central nervous system by increasing the production of the chemical serotonin. Serotonin can affect sleep, appetite, diet, temperature, and sexual behavior. Serotonin is the chemical messenger that plays a key role in controlling appetite, insomnia, and enhancing mood.