L-tryptophan is an amino acid essential to human metabolism because it is the metabolic precursor of serotonin (a neurotransmitter), melatonin (a neurohormone), and niacin (vitamin B3).* Other neurotransmitters and central nervous system chemicals, including dopamine, norepinephrine, and beta-endorphin, have been shown to increase following oral administration of tryptophan.* Because of its effects on serotonin and melatonin production in the brain, L-tryptophan supplementation can benefit mood and can also promote relaxation, a benefit for individuals attempting to get to sleep.
Supplementing with L-tryptophan allows the body to use it where it is needed most - for protein synthesis, niacin formation, or as a serotonin/melatonin precursor.* For optimal L-tryptophan absorption and transport across the blood-brain barrier, it is recommended to take L-tryptophan with a dietary carbohydrate.
Cost Per Serving: $1.11
Additional notes: Store in cool dry place.
Brand: Thorne Research
Delivery type: Vegetarian Capsule
Contraindications: There are no known adverse interactions or contraindications at publication date.
Serving size: 2 Capsules
Servings per container: 30
Hypromellose (derived from cellulose) capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide.
Take 1-2 capsules two times daily, or as recommended by a health-care practitioner.
ALLERGY WARNINGS This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY WARNING If pregnant, consult your health-care practitioner before using this product.
The product is manufactured at Thorne Research Headquarters in Dover, Idaho. Their products ingredients may come from all over the world depending on availability. However with all Thorne's purchased ingredients (no matter what their country of origin), they test every lot received for identification, purity, and quality. This may include testing for heavy metals, bacteria, and other contaminants.