L-Arginine is a naturally occurring amino acid often referred to as “conditionally essential,” meaning the body can make it but under increased demand (e.g., during intense training, stress or ageing) dietary intake may be helpful. It serves as a direct precursor for nitric oxide - a signalling molecule that supports blood vessel relaxation, healthy circulation and efficient nutrient delivery - and is also involved in the synthesis of proteins and creatine. Metabolics Arginine provides 530 mg of L-Arginine HCl per capsule in a clean, vegetarian- and vegan-friendly format.

Interested in ingredients involved in nitric oxide–related biochemical pathways and vascular signalling processes

Are looking to enhance nutrient delivery during exercise and recovery

Lead active lifestyles or experience increased metabolic demand

Prefer practitioner-grade, clean amino acid supplements with reliable dosing

Metabolics Arginine is produced in the UK to high practitioner standards under strict GMP and ISO accreditation, providing a pure L-Arginine HCl source without fillers or additives.

Arginine is an amino acid that acts as a precursor in nitric oxide–related biochemical pathways and is involved in normal cellular and metabolic processes. This clean, high-purity formulation delivers reliable amino acid nutrition in a convenient daily format, suitable for inclusion in consistent nutritional routines.

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