Leucine in Midlife Depression

"L-leucine is an essential amino acid used to competitively inhibit kynurenine uptake into the brain via the large neutral amino acid transporter (LAT1).~The proposed dose for L-leucine is 4.31 g/day, administered orally."

"L-lysine monohydrochloride is also an essential amino acid. It serves as an active comparator to control for general effects on brain protein synthesis and enters the brain through separate cationic amino acid transporters.~The proposed dose for L-lysine is 6 g/day, administered orally"