Does anyone know how bioavailable GABA is when taken in oral pill form?
Answer: GABA is from Amino Acids, which your body readily accepts because they are the building blocks of protein. If you take it surrounded by a capsule, the powder will be released and absorbed inwardly a matter of minutes (which will be a fast digestion time), but a tablet will take longer to digest and absorb, so that won't be reasonably as bioavailable, typically.