Tag: Amino acid comparison

Studies have shown that L-citrulline can increase plasma arginine levels more effectively than L-arginine itself. When considering what amino acid can replace arginine, L-citrulline stands out as a highly bioavailable precursor that bypasses common absorption issues.

While both L-lysine and L-arginine are basic, positively charged amino acids, a key difference is that L-lysine is essential, whereas L-arginine is semi-essential. This distinction profoundly affects their roles in the body, from immune support and viral replication to cardiovascular health.

As of 2025, glutamine remains the most abundant free amino acid in the human body, but are glutamine and glycine the same thing? Despite both being non-essential amino acids involved in crucial bodily functions, they possess distinct chemical structures, metabolic pathways, and roles in health and physiology.

Studies have shown that consuming essential amino acids (EAAs) around exercise can significantly increase muscle protein synthesis by up to 20%. For athletes and fitness enthusiasts alike, understanding what's the best EAA supplement is crucial for maximizing recovery and achieving peak performance.