Zein Pharma L-Tryptophan 500mg

L-Tryptophan (500 mg), Vegan Capsule (Hydroxypropyl Methylcellulose).

United Kingdom & 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 £50 to the UK.

Returns: Our products 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. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take one capsule of Zein Pharma L-Tryptophan, 500mg daily, preferably in the evening before bedtime to support sleep quality. Store in a cool, dry place away from direct sunlight. Keep out of reach of children. Consult a healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: L-Tryptophan

L-Tryptophan is an essential amino acid that your body can't make on its own and must obtain from outside sources. This pure amino acid is produced through natural fermentation and offered in a vegan capsule form for dietary supplement use.

What Does L-Tryptophan Do?

L-Tryptophan acts as a precursor to serotonin and melatonin, supporting mood balance, relaxation and sleep regulation. Dr. Lieberman at the National Institutes of Health found that sleep quality can improve with L-Tryptophan supplementation.

This supplement isn't meant to diagnose, treat, cure, or prevent any disease.

Zein Pharma is Welzo’s chosen partner for L-Tryptophan because their scientific approach to fermentation-based, plant-sourced manufacturing aligns with our commitment to purity and safety. The brand’s German production heritage underpins rigorous quality controls and adherence to European market standards, reinforcing trust across our wellness range. Zein Pharma’s focus on vegan, GMO-free solutions produced without animal testing highlights a clear dedication to ethical, transparent sourcing that resonates with our customers.

Our medical team has evaluated Zein Pharma for reliability and transparency, recognising their emphasis on purity and controlled formulation as a core strength. This assessment is supported by our quality certification process, which emphasises traceability, batch integrity and ingredient transparency. You can learn more about how we evaluate and certify products through our medical team and our quality certification process.

Zein Pharma L-Tryptophan is particularly well suited to this supplement due to its single-ingredient, pure approach, manufactured in Germany with natural fermentation, and its alignment with vegan and allergen-conscious consumers. This combination supports a reliable, well-defined product that fits Welzo’s standards for quality and safety.