Zein Pharma L-Glycine is a plant-based amino acid supplement that supports sleep quality, antioxidant status, and muscle recovery for daily wellness. The star ingredient, L-Glycine, helps collagen formation for skin and joints while supporting antioxidant defences via glutathione synthesis. Produced in Germany to strict quality standards, Zein Pharma Germany GmbH ensures vegan, allergen-free capsules and independent testing verification. That blend of science, safety and heritage is what makes this brand stand out in European supplements.

Available Sizes & Variants:

120 caps – standard vegan capsule format for daily use.

Benefits & Features:

• Supports sleep quality with calming effects, helping you wind down naturally at night.
• Promotes collagen formation for healthier skin and joints, while contributing to glutathione synthesis to help protect cells from oxidative stress, supporting overall resilience, everyday wellbeing.
• Aids muscle recovery via protein synthesis.
• Manufactured in Germany to strict quality standards with vegan, allergen-free capsules and independent lab verification, giving you confidence in every dose.
• Brand transparency and a pharmaceutical-grade approach set this product apart, offering reliable ingredient purity that helps you feel secure about daily use.

Zein Pharma's L-Glycine story blends German manufacturing rigour with clear ingredient sourcing. The vegan capsule uses non-GMO inputs and is verified by independent labs, underscoring the brand's commitment to purity and safety. Zein Pharma Germany GmbH has earned trust across Europe for pharmaceutical-grade quality and transparent practices. For shoppers exploring broader wellness routines, magnesium glycinate is another sleep and recovery option, while Liver King remains a popular name in the space. Some customers also consider probiotics for gut health alongside this routine.

L-Glycine, L-Glycine

• GTIN: 4260085383986
• Manufacturer: Zein Pharma
• Categories: Best SellersGlycine Supplements SupplementsSubscribe & Save ProductsZein Pharma Products
• 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 2 capsules daily with sufficient water (at least 200ml), do not chew. Store in a cool, dry place, well closed. Keep out of reach of children. The recommended daily intake should not be exceeded. Food supplements should not be used as a substitute for a varied diet and a healthy lifestyle.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Core Ingredient Is: L-Glycine

L-Glycine is a basic amino acid used by your body for everyday functions and as a building block for proteins. This product uses a plant-based capsule containing pure L-Glycine.

The capsule shell is plant-based, and the product is made in Germany under vegan, allergen-free standards with non-GMO ingredients and independent verification, ensuring ingredient transparency

What Does L-Glycine Do?

L-Glycine helps to support collagen formation, antioxidant status through glutathione synthesis, and muscle recovery by contributing to protein synthesis and serving as a creatine precursor. It also helps to support DNA, red blood cell, and heme synthesis, and can act as a calming neurotransmitter to support sleep and cognitive function, with evidence discussed in accessible reviews.

Scientific insights suggest these roles help to maintain normal connective tissue health, antioxidant defences, and metabolic function in everyday wellness. Glycine’s functions align with widely recognised nutrient roles in collagen-related processes and cellular protection.

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

Welzo’s medical team picked Zein Pharma as our partner for L-Glycine because this brand has built a solid reputation for pharmaceutical‑grade quality and transparent sourcing. Zein Pharma is headquartered in Germany and operates with GMP‑equivalent standards typical of the European nutraceutical sector, focusing on quality assurance and consumer safety. Their dedication to independent lab verification and vegan and allergen‑free production further reinforces trust in the manufacturing process. This brand consistently communicates robust manufacturing practices and ingredient purity, which matches our expectation of reliability from a premium supplier. For those curious about how we assess quality, our team evaluates partnerships against the standards we uphold and the verification processes provided by the manufacturer. This brand was evaluated by Welzo's healthcare professionals for conformity with the standards we enforce. Welzo's healthcare professionals and our rigorous vetting back the recommendation.