L-Tryptophan 500 mg
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 25% of ingredients have research evidence
What the Evidence Says
AI-generated · Qwen 3.6 · methodologyL-tryptophan is a precursor to serotonin, with moderate evidence supporting its role in sleep and mood regulation. Vitamin B6 and calcium act as cofactors in the synthesis of neurotransmitters. Research coverage for this specific combination is limited, though the individual components are well-studied for metabolic support.
AI-generated summary based on research evidence. Not medical advice.
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Label Data
Supplement Facts — Evidence Check
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Product Information
Directions for Use
Suggested Use: 1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take an additional 3 tablets before bed.
Warnings & Precautions
Caution: If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRIs or MAOIs consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.
Formulation Notes
L-Tryptophan with coenzyme B-6
Mood enhancement and sleep
The essential amino acid L-tryptophan helps support relaxation, restful sleep, and a positive outlook. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. This tryptophan includes the activated coenzyme form of vitamin B-6, called P-5-P, that is required to convert tryptophan to serotonin. 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.
Additional Information
Store in a cool, dry place.
Product Details
Research Evidence
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.