Doctor's Best L-Tryptophan, 500mg - 90 vcaps

L-Tryptophan 500 mg, Hypromellose (vegetarian capsule), Microcrystalline cellulose, Calcium laurate.

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 1 capsule daily, preferably 30 minutes before bedtime, with plenty of water. For optimum absorption, take separately from protein-containing foods. Store in a cool, dry place. Consult your physician before use if pregnant, lactating, have a medical condition, or are taking medications. May cause drowsiness.

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 (vital) amino acid that acts as a precursor to serotonin, a key brain chemical involved in mood and sleep regulation. In supplement form it provides the building block for serotonin production in the body.

This form is presented as a vegetarian capsule containing the amino acid in a carrier suitable for vegan and gluten-free formulations, supporting a pure and transparent ingredient profile.

What Does L-Tryptophan Do?

L-Tryptophan plays a role in the synthesis of serotonin in the brain, a neurotransmitter linked to mood and sleep. Scientific understanding supports its involvement in regulating these normal biological processes, contributing to daily psychological and sleep-related function.

This information aligns with established guidance on amino acids supporting serotonin pathways and healthy sleep and mood regulation.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Doctor's Best is chosen for its solid manufacturing ethos and commitment to purity at the source. This brand prioritises clear ingredient choices and readily available, non-GMO, gluten-free and vegan formulations, underscoring a thoughtful approach to quality from the outset. Its approach to product development reflects a dedication to focused ingredient profiles, with L-Tryptophan prepared in a manner that aligns with the brand’s clear, consumer-friendly messaging.

This brand thrives in product-specific capability, providing L-Tryptophan as a single, plainly understood active ingredient that supports mood and sleep wellness concepts as described by the product profile. This alignment with a straightforward, clean formulation makes Doctor's Best a well suited for Welzo’s rigorous curation process, which is carried out by our team of medical experts and supported by our emphasis on how we verify ingredient quality.

Welzo’s selection approach prioritises brand credibility, heritage and manufacturing discipline, and we have faith in Doctor's Best to meet these criteria while delivering a product that is well suited for our audience. This partnership is bolstered by our expert evaluation process and UK regulatory familiarity, ensuring strong local market expertise.