Well tolerated by the most highly allergic individuals. Twinlab L-Glutamine capsules are easier to swallow and assimilate. This product is manufactured at our own state of the art facility. Free Form Amino Acid. L-Glutamine- Picks up ammonia in the central nervous system and delivers it to the kidneys for deamination. Can readily pass the blood brain barrier, Sustains mental activity. Reduces an individuals desire to consume alcohol and sugar.