Weider Arginine + Ornithine 4000 - 180 caps

46.7% L-Arginine, L-Ornithine Hydrochloride, Glazing Agent; Hydroxypropyl Methylcellulose (Capsule Shell), Anticaking Agents, Magnesium Salts of Fatty Acids, Silicon Dioxide,

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

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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.

Take 6 capsules daily, with 3 capsules before training and 3 capsules before bedtime on training days. On rest days, take 3 capsules in the morning upon waking. Store in a cool place (8°C to a maximum of 20°C). Keep out of reach of small children. This product should not be used as a substitute for a balanced and varied diet and a healthy lifestyle.

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

L-Arginine is an amino acid that features in normal metabolism and acts as a precursor for nitric oxide production, which helps with vasodilation and blood flow. This form is used in amino acid supplements to back muscle-focused nutrition and recovery in active folks.

This form is sourced as a free amino acid and appears in dietary supplements to support bodily functions linked to blood flow and nutrient delivery during workouts.

What Does L-Arginine Do?

Dr. Campbell from the University of Nottingham found that L-Arginine participates in nitric oxide synthesis, which helps with vasodilation and blood flow to muscles during activity.

Additionally, L-Arginine helps with mechanisms that contribute to nutrient transport to exercising muscles, which aligns with EFSA- and NHS-supported interpretations of amino acids in normal physiology (in normal physiology).

This supplement also includes L-ornithine, which helps with ammonia metabolism and may complement arginine-related pathways for recovery [to support recovery].

This supplement is not intended to diagnose, treat or prevent any disease, which is important for consumer safety.

Weider is a brand with a long-standing track record in sports nutrition, renowned globally for trailblazing performance formulas and a history that runs through European and worldwide markets. This heritage, reinforced by the brand’s link to Joe Weider, gives a dependable backdrop for dedicated athletes chasing reliable amino acid support. The Weider range is produced in Germany, aligning with EU quality expectations and strict manufacturing standards that stress traceability and hygiene across manufacture.

Welzo picked this brand because our expert team weighs brand credibility, manufacturing excellence, and safety along with product integrity. Weider’s reputation for sport-specific formulations and reliable performance support stood out in our vetting process, which you can see reflected in our our expert team of doctors, nurses, and nutritionists and our commitment to our supplement quality standards. This brand’s strong manufacturing roots and consistent quality alignment make it a natural fit for Weider Arginine + Ornithine, supporting effective delivery of the targeted amino acids for athletic use.