Introducing Source Naturals L-Tryptophan - the ultimate supplement for relaxation, restful sleep, and positive mood. Made with 500mg of the essential amino acid L-tryptophan, this product plays a crucial role in the synthesis of melatonin and serotonin, hormones that regulate mood, stress response, and sleep/wake cycles. But that's not all - L-Tryptophan also supports immune functions by serving as a precursor to kynurenines, which regulate immunity. And if that wasn't enough, it also converts to niacin in the body, supporting circulation, a healthy nervous system, and the metabolism of food. Plus, it aids in the production of hydrochloric acid for the digestive system. Rest assured, Source Naturals L-Tryptophan is of the highest quality, regularly tested to meet the strictest standards. Experience the power of L-tryptophan today and

Iron (naturally occurring), L-Tryptophan, Gelatin (capsule), silica, magnesium stearate, dibasic calcium phosphate, and microcrystalline cellulose.

Please refer to the product packaging label for the most accurate and up-to-date information regarding ingredients. It is crucial to review all ingredients on the product packaging itself carefully to ensure they align with your dietary needs and restrictions. Welzo cannot be held responsible for any discrepancies or allergen information on the website as the information is not always accurate.

UK, Europe & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

Free shipping on orders over £45 to the UK.

Returns: Our supplements are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging.

1. Consume one capsule three times a day, without food and preferably with fruit juice, for optimal benefits.
2. For promoting peaceful sleep, ingest three capsules before going to bed.

Please consult the product packaging for accurate instructions on how to use the product. Welzo is not liable for any discrepancies or errors on the website. Always follow the directions on the packaging to ensure proper use.

1. Supports Healthy Mood and Emotional Well-Being: L-Tryptophan is an essential amino acid that acts as a precursor to serotonin, a neurotransmitter that helps regulate mood and emotions. By increasing serotonin levels, L-Tryptophan can help promote positive mood and emotional stability.
2. Promotes Restful Sleep: L-Tryptophan is also known for its ability to support healthy sleep patterns. It is converted into the hormone melatonin, which helps regulate the body's sleep-wake cycle. By increasing melatonin levels, L-Tryptophan can help promote restful and rejuvenating sleep.