L-Tryptophan is a vegan amino acid supplement that supports mood and restful sleep by boosting serotonin production, while Lidtke's commitment to purity and quality underpins every capsule. The main active ingredient is L-Tryptophan (TryptoGOLD™), paired with cofactors to support absorption and conversion. This brand is known for high purity and transparent manufacturing, giving you a reliable, allergen-free option for daily mood and sleep support.

Available Sizes & Variants:

60 capsules L-Tryptophan - A convenient bedtime dose for daily mood and sleep support.

Benefits & Features:

• Supports mood and restful sleep with serotonin support.
• Cofactors like B vitamins, magnesium, and folate support conversion to serotonin.
• Vegan, non-GMO formula produced in a GMP-certified facility, with TryptoGOLD purity and allergen-free ingredients, giving you confidence that you're choosing a clean, reliable option for daily mood and sleep support.
• Designed for bedtime use and daily routine, it supports calm evenings.
• Allergen-free formulation helps support sensitive individuals while remaining vegan and gluten-free.

Lidtke is famous for its amino acid expertise and the purity of TryptoGOLD. This L-Tryptophan Complete is produced in a GMP-certified facility, vegan and allergen-free, with non-GMO ingredients. The formula stacks cofactors such as B vitamins, magnesium, and folate to aid conversion to serotonin, supporting mood balance and a calmer evening routine. The brand's commitment to transparency and high manufacturing standards makes it a trusted choice for those who want a clean, dependable supplement you can feel good about. This isn't a vitamin d supplement, it's targeted mood and sleep support.

L-Tryptophan

• GTIN: 630610001625
• Manufacturer: Lidtke
• Categories: LidtkeNew ArrivalsTryptophan 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 capsule daily or follow your healthcare professional's instructions. 2 capsules taken daily with food\, 1 at breakfast\, 1 at lunch\, or as professionally directed.

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 direct precursor to serotonin, which regulates mood, sleep and relaxation.

This formula includes cofactors such as vitamins B2, B6 and folate and minerals to support the enzymatic conversion to serotonin, and the product is vegan with GMP-certified manufacturing.

What Does L-Tryptophan Do?

L-Tryptophan plays a role in serotonin production, a neurotransmitter associated with mood and sleep regulation in line with EFSA guidance.

The body converts L-Tryptophan to 5-HTP before producing serotonin, and cofactors in the formulation support this metabolic pathway. Dr. Shaw of a major university has reported findings related to this amino acid in the context of sleep and mood research.

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

We chose Lidtke for this L-Tryptophan formulation because of the brand's clear heritage in amino acid-based supplements and its commitment to purity and transparent manufacturing. Lidtke is recognised for its specialised focus on high-purity amino acids, with a reputation for offering premium ingredients such as TryptoGOLD™ and allergen-free, non-GMO formulas, which aligns with Welzo’s standards for clean, trustworthy nutrition.

The brand’s quality ethos sits on a GMP-certified manufacturing facility, emphasising dependable quality control and stringent processes. Their openness about manufacturing practices and allergen avoidance supports consumer confidence and lines up with Welzo's emphasis on safety and traceability. This approach is reinforced by their stated commitment to delivering the top-grade L-Tryptophan available, a story that resonates with our expert team’s evaluation of brand credibility and track record.

We teamed up with Lidtke because their established practice of high-purity sourcing and vegan, non-GMO formulation directly suits this supplement’s needs while meeting our standards for testing, certifications, and overall quality. This brand was vetted by our medical team for compliance with our ingredient quality and purity standards.