BCAAs, also known as branched chain amino acids, include valine, leucine and isoleucine. These are 3 essential amino acids that make up ⅓ of muscle proteins.
BCAAs may help prevent the breakdown of muscle tissue during intense exercise. They are converted into two other amino acids called glutamine and alanine. These are released in large quantities during intense aerobic exercise like running, cycling, swimming. They can be used as fuel by the muscles especially when muscle glycogen levels are low.
BCAA supplements are relatively safe to consume because branched chain amino acids are naturally found in protein food sources in the diet. It is important to note that excessive intake may inhibit/reduce the absorption of other amino acids. BCAA might cause stomach problems like nausea, vomiting, diarrhea and stomach bloating.