Guanidinoacetic acid is an amino acid derivative, also known as glycine guanidine. Its chemical formula is C3H7N3O2, with a molecular weight of 117.10 g/mol. Citrulline is an important metabolite in the body, which is involved in muscle energy metabolism and the growth and repair of muscle tissue.
Citrulline is a precursor of creatine in muscles, which is a substance that can store and release energy. In the body, citrulline is converted to creatine through a series of enzyme catalyzed reactions, and then creatine can release phosphate groups during high-intensity exercise, providing additional energy for muscle use.
Citrulline is also considered beneficial for muscle growth and repair. It can increase the creatine reserve in muscle cells, thereby promoting protein synthesis and muscle tissue growth. Therefore, some sports nutrition products have added citrulline to enhance muscle strength and quality.
Citrulline can be consumed through food, especially protein rich foods such as meat, fish, and dairy products.