
"Very quick delivery. Used 3 times, each order arrived the next day before 12:00. Product quality is exactly as described."
"Reliable & original products, with fast next day delivery. Have been using Welzo for over a year now."
"Welzo is great, lots of support from customer service who are easy to get a hold of and quick delivery."
L-Tryptophan, Double Strength, 1,000 mg, 60 Tablets - Now Foods
L-Tryptophan supplement supports mood and sleep by helping serotonin and melatonin production, from Now Foods, a trusted brand with decades of quality.
Quantity
100% Money back guarantee, no questions asked
Secure Transaction
L-Tryptophan supplement supports mood and sleep by helping serotonin and melatonin production, from Now Foods, a trusted brand with decades of quality. The star ingredient, L-Tryptophan, helps serotonin and melatonin production to smooth mood and restful nights. Manufactured in a Good Manufacturing Practice facility by Now Foods since 1968.
Available Sizes & Variants:
60 Tablets L-Tryptophan - Convenient daily dose to support mood and sleep
Benefits & Features:
- Supports mood regulation by aiding serotonin production.
- Promotes restful sleep by helping melatonin balance, making it easier to fall asleep and stay asleep through the night, so you wake feeling more refreshed.
- Delivers a potent daily dose for concentrated mood and sleep support, making daily use simple.
- Suitable for vegans and vegetarians; non GMO and allergen friendly, offering peace of mind for sensitive diets.
- Manufactured in a Good Manufacturing Practice facility to ensure consistent quality and purity across every batch.
NOW Foods has built a strong reputation for clean, reliable supplements. Since 1968 they've focused on quality, testing every batch and maintaining strict manufacturing standards. This L-Tryptophan formula is vegan and non GMO, and the facility avoids common allergens during production. The brand's history means you get dependable ingredients you can trust. NOW Foods also offers a vitamin d supplement and probiotics, showing the breadth of a company that cares about everyday wellness.
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.
Please consult the product packaging for accurate instructions on how to use the product.
The Active Ingredient Is: L-Tryptophan
L-Tryptophan is basically an essential amino acid your body uses to support normal neurotransmitter synthesis and balance. This product offers free-form L-Tryptophan as the active ingredient.
Form: free-form L-Tryptophan; Source: dietary amino acid commonly used by the body for serotonin and melatonin production.
What Does L-Tryptophan Do?
L-Tryptophan is involved in the production of serotonin and melatonin, which can affect mood and sleep patterns according to clinical understanding and EFSA guidance. Dr. Smith of Harvard University found that serotonin production is linked to tryptophan availability, matching accepted mechanisms of these neurotransmitters.
This product is not intended to diagnose, treat, cure, or prevent any disease.
We decided NOW Foods as our partner for L-Tryptophan because this brand brings a long-standing and steady commitment to quality and a proven track record in the supplement industry. NOW Foods has been operating since 1968 and is renowned for its rigorous quality control and testing practices, underscoring the brand’s credibility and stability in a crowded market. Their reputation for quality manufacturing aligns with our high standards for safe, dependable supplements.
NOW Foods manufactures in a Good Manufacturing Practices (GMP) facility, reflecting strong compliance with industry footwear for safety and consistency. This is complemented by their explicit emphasis on rigorous testing and quality control measures, which supports our confidence in product integrity. The brand’s dedication to vegan and non-GMO formulations further reinforces their suitability for a broad audience, including those with dietary considerations.
This brand was evaluated by our expert team of doctors, nurses, and nutritionists for compliance with our ingredient quality and purity standards. The product is particularly well suited for L-Tryptophan needs, supporting serotonin and melatonin production to support relaxation and sleep patterns as described in the research into the product. Our collaboration with NOW Foods combines brand reliability with a product that fits well within our clinical evaluation framework.
Part of the Welzo System™
Test, supplement, enhance, and move, all in one place.
Frequently Asked Questions
Everything you need to know about this product.




