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NOW L-Tryptophan

NOW - L-Tryptophan

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Info: 60 Veg. Capsules

L-Tryptophan, an essential amino acid, is needed to produce serotonin (a neurotransmitter involved in sleep and mood), melatonin (a neurohormone, also related to sleep), and niacin (vitamin B3), all of which assist in the regulation of sleep, positive mood and immune system function. L-Tryptophan must be obtained nutritionally, as it's not made by the body, and even if it's present in many of the foods you're eating, there may not be enough of it being taken up by the brain, since other neutral amino acids (tyrosine, phenylalanine, valine, leucine, and isoleucine) compete with it at the neuroreceptors, so a supplement may be in order to maintain good health and proper sleep and mood balance.

Product Notes:

L-Tryptophan nutritional supplements are once again available in Canada. An essential amino acid, L-Tryptophan is not produced by our bodies -- it must be obtained from the diet. NOW Foods tests all L-Tryptophan to ensure it is uncontaminated by potentially harmful Peak E and microorganisms. Health Canada Natural Product Number: 80035972.


Per capsule:
220 mg L-Tryptophan.

Non-medicinal ingredients: Veg. Capsule (hypromellose and water), Stearic Acid, Hydroxypropyl Methylcellulose.

Suggested Usage:

Adult dosage: Take 1 capsule daily with meals. Store in a cool, dry place.


Consult a healthcare practitioner prior to use if you are pregnant or breastfeeding. Tryptophan supplementation should be avoided in depression with reversed diurnal variation. Patients with liver cirrhosis should avoid tryptophan supplementation.
UPC / Barcode: 733739901668