Source Naturals LTryptophan with Coenzyme B6 500mg 60 Tablets

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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.

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 serves as a precursor to important brain chemicals involved in mood and sleep regulation.

This form combines L-Tryptophan with coenzyme B6 to support the body’s conversion processes, aiding the production of serotonin and melatonin from tryptophan.

What Does L-Tryptophan Do?

L-Tryptophan helps support the production of serotonin and melatonin, substances linked with mood regulation and sleep quality. Vitamin B6 in this formulation assists the conversion of tryptophan into these signalling compounds, aligning with known nutrient pathways for neurotransmitter synthesis.

Evidence suggests these pathways contribute to normal mood and sleep processes, with the coenzyme B6 supporting the conversion and utilisation of tryptophan.

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

Source Naturals is a benchmark in quality and consistency, with a long-standing reputation for dependable sourcing and rigorous quality controls that align with Welzo’s commitment to excellence. This brand’s manufacturing philosophy emphasises purity and reliability, underscored by their regular quality testing and purity screening to ensure extremely pure ingredients. This level of care translates into consistent, well‑documented product profiles that our medical team trusts for real‑world use. For Welzo, this is a clear demonstration of third‑party validation in practice, backed by the brand’s emphasis on rigorous internal standards and transparent quality practices. We evaluated this partnership with Welzo's healthcare professionals to ensure alignment with our ingredient‑quality criteria and safety expectations, and they confirmed Source Naturals meets our high bar for purity and consistency as part of how we verify ingredient quality. Welzo's healthcare professionals continue to oversee this collaboration. how we verify ingredient quality.