Supplement Ingredient Guide: Arginine What is it? Arginine is a none-essential amino acid. Arginine supplements are usually marketed as: L-Arginine, Arginine pyroglutamate or Arginine-alpha-ketoglutatrate. Indications Arginine is indicated for those looking to build muscle mass, improve their recovery from training or improve their endurance levels. It’s used within a lot of pre-workouts. How much should I take? Anything between …
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