L-Tryptophan 500mg by Source Naturals – Relaxation and Sleep Support Amino Acid
L-Tryptophan 500mg capsules by Source Naturals provide an essential amino acid that the body uses to make serotonin and melatonin. Each capsule supplies 500 mg of L-tryptophan, offering a focused option for people seeking amino-acid-based support rather than a multi-ingredient bedtime blend.
This formula supports the nutritional pathways involved in relaxation, a positive outlook, and the normal sleep-wake cycle. The capsules contain gelatin, so they are not a vegetarian option. Both 60-capsule and 120-capsule bottles contain the same strength; the difference is the number of capsules, not the amount in each capsule.
Key L-Tryptophan 500mg Benefits
- Provides tryptophan for normal serotonin production, supplying a nutritional building block for the chemical messenger involved in mood and emotional balance.
- Supports restful sleep through tryptophan's role as a precursor in the body's natural melatonin pathway and normal sleep-wake rhythm.
- Offers relaxation support and supports a positive mood through normal amino acid and neurotransmitter nutrition.
How L-Tryptophan 500mg Works
Essential means your body needs to obtain tryptophan from food or other dietary sources rather than make it from scratch. Along with its role in building proteins, tryptophan enters a pathway that produces serotonin. Serotonin is a messenger that helps nerve cells communicate and participates in normal mood regulation.
Serotonin also supplies the starting material for melatonin synthesis. Melatonin helps signal the timing of the body's sleep-wake cycle; providing its precursor is different from taking melatonin itself. Tryptophan can also contribute to niacin formation, linking this amino acid to normal vitamin B3 nutrition. It is not a replacement for a varied diet or a consistent sleep routine.
Key Functional Ingredients Include:
- L-Tryptophan: Supplies the essential amino acid used to form serotonin, which in turn can be converted into melatonin. These linked pathways connect tryptophan nutrition with normal mood balance, relaxation, and sleep-wake signaling. The body regulates these conversions; a precursor does not act identically to a finished hormone.
L-Tryptophan 500mg Is Formulated For
- Adults considering targeted tryptophan nutrition for relaxation and normal sleep support.
- People who prefer a single functional amino acid rather than a blend of sleep ingredients.
- Those who can use gelatin capsules and have reviewed the medication and pregnancy cautions with their healthcare professional.
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner if you have doubts about a new supplement. Or you may book a FREE product consultation with Holistic Health Partners, led by Carolyn Mulally BS, RN, HN-BC. You may also wish to explore our other Sleep Supplements, Mood Support Supplements, and Amino Acids Supplements collections.
Recommendation: 1 capsule three times daily, between meals and preferably with fruit juice. To support restful sleep, take an additional 3 capsules before bed.*
Serving Size: 3 Capsules
Servings Per Container: 60-capsule bottle: 20; 120-capsule bottle: 40
L-Tryptophan (25 mg niacin equivalents) ... 1.5 g †
†Daily Value not established.
Other Ingredients: gelatin (capsule), magnesium stearate, silica, microcrystalline cellulose, and dibasic calcium phosphate.
Does Not Contain: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance.
Storage: STORE IN A COOL, DRY PLACE.
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.
Additional precautions: Tryptophan can cause drowsiness, nausea, dizziness, or tremor. Avoid driving if drowsy or dizzy. Combining tryptophan with medicines or supplements that increase serotonin can cause serotonin syndrome, a potentially serious reaction. Obtain professional advice before combining them. Seek urgent medical care for confusion, fever, or marked muscle twitching after use.
Frequently Asked Questions About L-Tryptophan 500mg
What are the benefits of L-Tryptophan 500mg?
L-Tryptophan 500mg supplies an essential amino acid used to make serotonin and, further along the same pathway, melatonin. These normal physiological roles connect tryptophan with mood balance, relaxation, and sleep-wake signaling. Source Naturals provides 500 mg per capsule, with 1.5 g in the three-capsule serving. This is a targeted amino acid supplement rather than a melatonin product or a blend of sedating botanicals. It does not guarantee a particular sleep response.
Who should take L-Tryptophan 500mg?
This formula is an option for adults discussing targeted amino acid support for relaxation and normal sleep with a healthcare professional. It contains gelatin capsules, so it does not suit a vegetarian supplement routine. Both bottle sizes provide the same 500 mg capsule strength. If you are pregnant, may become pregnant, breastfeeding, or taking medicines such as SSRIs or MAOIs, the label directs you to consult your healthcare professional before use. Do not give it to children without professional guidance.
Are there any side effects of taking L-Tryptophan 500mg?
Tryptophan can cause drowsiness, nausea, dizziness, or tremor; avoid driving if affected. Combining it with serotonin-increasing medicines or supplements can cause serotonin syndrome. Seek urgent care for confusion, fever, or marked muscle twitching. 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. The gelatin capsule also matters if you avoid animal-derived ingredients.
How does L-Tryptophan 500mg support overall health?
Tryptophan contributes to normal protein nutrition and supplies material for the body's serotonin and melatonin pathways. Those functions connect this amino acid with everyday mood balance and the timing of sleep and wakefulness. The body can also convert tryptophan into niacin, a vitamin involved in normal energy metabolism. This formula focuses on tryptophan rather than providing a complete protein or multivitamin. Use it alongside balanced meals and regular sleep habits, with attention to its medication cautions.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
