Supports Relaxation Pharmaceutical Grade (USP) Encourages Positive Mood Promotes Restful Sleep Vegetarian Formula L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW® L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination. ....read more

Dietary supplement. L-5-Hydroxytryptophan supports normal sleep cycles. 5-HP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid, tryptophan, to serotonin. Clinical studies have shown that 5-HTP increases the amount and availability of serotonin produced by the body. Increased brain serotonin levels may produce positive effects on emotional well-being, appetite regulation, melatonin production and maintaining a healthy sleep cycle. Source Naturals 5-HTP is naturally derived from the seeds of the African plant Griffonia simplicifolia. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.) Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance. ....read more

It's back, and it's better than ever! L-Tryptophan is a precursor to serotonin, and it's powerfully effective when used properly. By supporting serotonin levels, L-tryptophan not only helps us fall asleep and stay asleep,but it also promotes mental health and provides dietary support against nervousness and tension. TryptoPure L-Tryptophan from Swanson Ultra is the purest tryptophan -- and the only pharmaceutical-grade tryptophan -- on the world market. It's produced through a natural fermentation process from a vegetarian source, using the most precise standards for safety and quality assurance. ....read more

NOW L-Tyrosine is a non-essential amino acid and plays an important role in the production of the neurotransmitters dopamine and norepinephrine as well as a precursor for adrenaline.



* Picture may be of different size or flavor ....read more

L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function.* As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination. ....read more

L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW® L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination. ....read more

Dietary supplement. Mood, relaxation, sleep. The essential amino acid L-tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is in the body's precursor to the kynurenines that regulate immunity. If needed, L-tryptophan converts to niacin in the body, which supports circulation, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality. (These statements have not been evaluated by Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease). Suitable for vegetarians and Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance. ....read more

-Pharmaceutical Grade (USP) -Encourages Positive Mood -Promotes Restful Sleep L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized in the body and must be obtained from the diet. NOW L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination. * Picture may be of different size or flavor ....read more

Dietary supplement. Mood, relaxation, sleep. The essential amino acid L-Tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, L-Tryptophan converts to niacin in the body, which supports circulation, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.) Hypoallergenic: Contains no yeast, dairy, egg, starch, salt, preservatives, or artificial color, flavor or fragrance. ....read more