L-Tryptophan is a supplement that helps with sleep and mood, helping you feel calmer and more balanced after busy days. The key active ingredients support serotonin and melatonin pathways for mood balance and better sleep. Metabolic Maintenance delivers allergen-free capsules manufactured under strict GMP standards. This quality oversight and careful sourcing set the product apart.

Available Sizes & Variants:

60 capsules L-Tryptophan - Daily support for sleep and mood balance.

Benefits & Features:

• Supports restful sleep and calmer mood.
• Key active ingredients L-tryptophan and Vitamin B6 support serotonin and melatonin production.
• Designed for daily use to help you wind down after a busy day.
• Essential for mood and sleep, the star ingredient crosses the blood brain barrier to boost serotonin and melatonin, with Vitamin B6 acting as a cofactor to maximise the conversion.
• Allergen free capsule makes it easy to fit into most dietary needs.

Metabolic Maintenance has built a reputation on clean, well tested formulations. The L-Tryptophan here carries the TryptoPure name, signalling high purity from controlled fermentation and a focus on avoiding common contaminants. The capsules are allergen free and manufactured under GMP standards, with identity and contaminant testing for reassurance. This brand's careful sourcing and rigorous quality checks set it apart from cheaper rivals. It sits nicely alongside a vitamin d supplement and even pairs with n acetylcysteine for a broader wellbeing routine.

Vitamin B-6 (As Pyridoxine HCl) & L-Tryptophan (TryptoPure)

• GTIN: 838287001492
• Manufacturer: Metabolic Maintenance
• Categories: Metabolic MaintenanceNew ArrivalsTENATryptophan Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the 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 30 days in the same original and unopened packaging. Subject to T&C's.

Take one to two capsules daily on an empty stomach at bedtime, or as advised by a healthcare professional. Take 1 capsule daily with water.
Suitable for adults and children over 12 years.

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

The Active Ingredient Is: L-Tryptophan (TryptoPure™)

L-Tryptophan is an essential amino acid that acts as a direct precursor to serotonin and melatonin, supporting normal mood and sleep regulation. This form is supplied as TryptoPure™ for high-purity L-tryptophan, used alongside Vitamin B-6 as a cofactor in metabolic processes.

This formula highlights L-tryptophan as the main active ingredient, with Vitamin B-6 included to support its conversion to serotonin and melatonin.

What Does L-Tryptophan Do?

L-Tryptophan participates in the production of serotonin and melatonin, which are involved in mood regulation and sleep-wake cycles. Scientific research suggests that L-tryptophan can support these pathways in your body, with Vitamin B-6 aiding the conversion process, in line with EFSA and NHS guidance.

Dr. Hartmann from the University of Munich and colleagues note that these mechanisms underpin normal sleep and mood regulation as part of a balanced diet and healthy lifestyle.

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

Metabolic Maintenance shows a clear commitment to facility standards and responsible manufacturing, making them a great partner for Welzo. This brand centres on steady quality across its operations, matching our aim to work with suppliers that prioritise reliability and safety.

Metabolic Maintenance employs TryptoPure™-brand L-Tryptophan and follows strict manufacturing practices in line with FDA expectations for dietary supplements and GMP safety standards. Their allergen-free formula and open approach to ingredient testing reflect a disciplined quality philosophy that resonates with our standards. We recognise this brand for its strong reputation in the industry and its history of making focused, clinically relevant amino acid supplements, which supports the trust we place in their products. When evaluating partners, our medical team carefully and thoroughly assesses supplier credibility and quality systems, and this brand consistently fits our criteria our medical team for safety and reliability, complemented by our rigorous testing protocols.