L-Tryptophan Complete helps mood and sleep by getting L-tryptophan to the brain, with cofactors that assist serotonin production for a calmer and more balanced day. A thoughtful blend with cofactors makes the conversion of tryptophan into serotonin, helping mood and sleep flow more naturally.

Available Sizes & Variants:

60 capsules of L-Tryptophan Complete – convenient daily serving.

Benefits & Features:

• Helps mood and sleep by providing the building blocks for serotonin together with key cofactors.
• Daily support, quick and easy.
• Curcumin helps guard serotonin from oxidative degradation, supporting stable mood.
• Cofactors such as B6, vitamin C and magnesium aid tryptophan to serotonin conversion.
• Manufactured in a GMP certified facility, the formula uses vegan, non-GMO ingredients and TryptoGOLD™ for traceability, quality assurance, and consistent potency you can rely on daily.

From the brand's amino acid focus to the careful sourcing of TryptoGOLD L-tryptophan, L-Tryptophan Complete stands for purity and transparency. The vegan, non-GMO blend is produced in a GMP certified facility and is free from common allergens, reflecting Lidtke's commitment to clean label science driven formulas that work with your vitamins minerals routine. It's one of those l tryptophan supplements you can trust to support mood and restful sleep.

L-Tryptophan, L-Lysine, Magnesium, Curcumin, Taurine, Calcium ascorbate, Niacinamide, P5P, Riboflavin, Organic lemon peel extract, Folic acid, vegan capsule.

• GTIN: 630610003223
• 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.

Consume three capsules per day or follow the instructions given by a medical expert. Take 1 scoop\, 1 to 2 times daily mixed with water\, juice\, or food\, or as directed by a healthcare professional

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

1. Promotes Good Mood and Mental Health: L-Tryptophan, an essential amino acid found in the body, is known to boost serotonin levels which are responsible for regulating mood and emotions. By supplementing with L-Tryptophan, individuals may experience improved mood, reduced anxiety, and better mental health.
2. Enhances Sleep Quality: L-Tryptophan is a precursor to melatonin, the hormone responsible for regulating sleep-wake cycles. By taking L-Tryptophan supplements, individuals may experience improved sleep quality, reduced insomnia, and better overall rest and relaxation. This makes it an ideal supplement for those struggling with sleep disturbances or sleep disorders.

The Active Ingredient Is: L-Tryptophan

L-Tryptophan is an essential amino acid that the body uses to make serotonin, a key neurotransmitter involved in mood regulation and sleep. This product offers L-tryptophan in a high-purity form as an active ingredient, with the branded TryptoGOLD™ variant signalling a premium source of the amino acid.

This ingredient is supplied as an amino acid supplement and may be paired with cofactors to support serotonin metabolism and utilisation.

What Does L-Tryptophan Do?

L-Tryptophan is involved in the normal production of serotonin, which can influence mood and sleep processes as part of everyday healthy function. It is supplied with cofactors that support the conversion of tryptophan to serotonin, aligning with EFSA-inspired understandings of amino acid metabolism.

The combination of L-Tryptophan with supporting nutrients helps sustain the body’s natural serotonin pathways and associated restful sleep and mood balance as indicated in the product’s research context.

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

Welzo’s medical team chose Lidtke for this brand because of their clear commitment to purity, openness and amino-acid focused formulations. This brand is widely recognised for its work with ultra-premium L-tryptophan and carefully balanced cofactor blends, stressing clean-label practices and allergy‑safe production.

Lidtke operates in a GMP-certified facility, keeping up rigorous quality control and ingredient verification throughout manufacturing. Their approach to using branded ingredients such as TryptoGOLD™ supports traceability and trusted sourcing, reinforcing the brand’s reputation for quality and reliability. The combination of Lidtke’s specialised expertise in amino acids and their allergy‑friendly, vegan, non‑GMO offerings positions them strongly in the marketplace and aligns with our safety and quality standards. For those seeking mood and sleep support through scientifically informed nutrition, Lidtke’s formulation shows a thoughtful integration of cofactors with L‑tryptophan, within a framework that emphasises clean, allergen‑free ingredients.

Our partnership was evaluated by our team of medical experts for compliance with our rigorous testing protocols, and recognised for UK market suitability and regulatory alignment.