Ingredients / Amino acids & muscle

Beta-alanine

Also listed as: CarnoSyn

What it is

An amino acid your muscles use to make carnosine, which helps buffer acid built up during hard exercise.

Why it is in energy drinks

Marketed for endurance in high-intensity exercise, so it is common in pre-workouts.

Worth knowing

At supplement doses it often causes a tingling in the skin that is not considered harmful.

General information, not medical advice. We read what the label lists and don't test what an ingredient does.