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L-Arginine HCL Powder

500g Powder | Muscle Performance Supplement
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Free Delivery on all UK orders over £50.

WeightWorld have precision formulated the highest of quality Arginine powder supplement in order to provide you with the power to gain and tone muscle. Made from 100% pure L-Arginine, this supplement aims to help promote improvements in muscle size and performance, whilst also providing a complement to natural circulation which ties back into your ability to be active. Each pack contains an enormous 125 servings, and the powder form allows for a muscle supplement that can be easily mixed into drinks or food.

  • Helps muscle growth and repair
  • Sourced from pure L-Arginine
  • Top ingredient used by athletes
  • Purest high quality powder form
  • 125 servings inside
  • Suitable for vegetarians and vegans
  • Vegan
  • GMP
  • Gluten-free
  • Vegetarian

What Are Branched Chain Amino Acids?

There are 20 different Amino Acids which culminate to form protein, all of which are unique, but all of which have a profound effect on protein synthesis in the body. On a cellular level, Amino Acids are the building blocks with which your body forms protein structures, in particular microfibres (the individual fibres which form skeletal muscle). Therefore Amino Acids are an essential ingredient for building and repairing your muscle.

Why Supplement With L -Arginine?

Muscle Size And Strength

L-Arginine is one of the most widely used and revered muscle gainers on the market, and one of the most famous of the 20 Amino Acids, which are the building blocks of muscle protein. Arginine is widely used by athletes and bodybuilders as an active agent to help with the process of muscle size and definition growth. This supplement provides this active agent in a concentrated powdered form, for fast absorption that can be achieved from simply mixing into a drink or food.


When ingested, Arginine releases Nitric Oxide, a natural chemical agent which is linked to the dilation of the blood vessels. Relaxed blood vessels can help to relieve tension, improve overall circulation, and also dramatically lower the risk or cholesterol buildup, scarring or damage to the arterial walls.

How To Take L-Arginine Powder

Consume 1 scoop (4 grams) of L-Arginine Powder mixed into water thoroughly, or mixed into food within 1 hour before or after exercise. You should not exceed the recommended daily serving unless you have received the consultation and permission of a healthcare professional. Please ensure that the scoop has been leveled off to ensure that you are not consuming too much of the product.

Full Ingredients List

L-Arginine Powder

Advice When Taking L-Arginine Powder

Please do not consume this supplement as a meal replacement supplement as this product is intended simply to complement a balanced diet and exercise. This supplement is suitable for both vegans and vegetarians and there are no known side-effects of consuming L-Arginine.

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