Zein Pharma L-Arginine + L-Citrulline, 500mg - 90 caps

L-arginine, L-citrulline, Hydroxypropyl methylcellulose, Ascorbyl Palmitate.

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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.

Swallow 6 capsules daily (3 capsules in the morning and 3 capsules in the evening) whole and with plenty of water. If necessary, you can also open the capsules and stir their contents into a drink or meal. Store in a cool, dry place away from direct sunlight. Caution: the pack contains a dry bag that is not suitable for consumption. Please seek advice from a health care professional before taking if you are pregnant or nursing. Keep away from children. The recommended daily dosage should not be exceeded.

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

L-Arginine is an amino acid that helps to support and maintain the production of nitric oxide, supporting normal blood flow and vascular function.

This blend brings together L-Arginine and L-Citrulline, with L-Arginine identified as the main active ingredient and L-Citrulline providing additional support to the overall nitric oxide pathway.

What Does L-Arginine Do?

L-Arginine helps to boost nitric oxide availability, which can aid blood flow during activity and may influence exercise capacity as part of normal physiological processes.

The pairing of L-Arginine and L-Citrulline helps the body’s nitric oxide pathway, supporting steady vascular function and endurance through regular activity.

This product isn't intended to diagnose, treat, cure, or prevent any disease.

Zein Pharma is a well-regarded pharmaceutical manufacturer dedicated to quality, safety and efficacy. The brand operates in a WHO-GMP certified facility with segregated production areas, cleanroom standards and rigorous in‑process and final QC testing, alongside comprehensive microbial and analytical assessments. This level of manufacturing discipline aligns with Welzo's commitment to consistent safety and purity across products and is reinforced by Zein Pharma’s stated focus on transparency and stakeholder well‑being.

Welzo’s medical team, described here Welzo's healthcare professionals, evaluated Zein Pharma against our criteria for quality, traceability and compliance, and we reference our rigorous testing protocols to ensure every batch meets high standards. This brand’s heritage since 2019 as a dedicated quality‑driven manufacturer underpins our confidence in their production philosophy and continuous quality improvement.

For Zein Pharma L-Arginine + L-Citrulline, the combination suits a research‑backed approach to amino acid supplementation, and the brand’s robust QA framework supports reliable potency and purity. This alignment with our selection criteria and our partnership rationale makes Zein Pharma our trusted supplier for this supplement.