What is it?PE Nutrition Beta-Alanine tablets contain Beta-Alanine, which is one of the two building blocks for a molecule called Carnosine – found in muscle tissue.Supplement Containing Beta Alanine Suitable For Vegetarians and Vegans What Are the Benefits of This Supplement?PE Nutrition Beta-Alanine tablets are a non-essential amino acid and is the only naturally occurring beta-amino acid. This product is not intended for use by persons under the age of 18.