BCAAs (leucine, isoleucine, valine) are three essential amino acids heavily marketed for muscle growth and recovery. Our honest assessment: if you eat enough protein (1.6g/kg/day), BCAAs are redundant. You're already getting them from food. The evidence for BCAAs as a standalone supplement is weak compared to simply eating adequate protein or supplementing with complete EAAs. EAAs (all 9 essential amino acids) are the better choice if you need an amino acid supplement.
Not Prohibited.
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated: April 5, 2026
Not medical advice. Based on published clinical research and systematic reviews.