Manufacturer's Description: GABA (gamma aminobutyric acid) is a non-essential amino acid found mainly in the human brain and eyes. It is considered an inhibitory neurotransmitter, which means it regulates brain and nerve cell activity by inhibiting the number of neurons firing in the brain. GABA is referred to as the "brain's natural calming agent". By inhibiting over-stimulation of the brain, GABA may help promote relaxation and ease nervous tension.* NOW provides only the naturally occurring L-form as found in food and in the body. Supplement Facts Serving Size:1 vcap Servings per Container: 100 Ingredient Amount % Daily Value** GABA 750mg † ** Percent Daily Value is based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. † Daily Value not established. Ingredients: Other Ingredients: Cellulose (capsule), Silica and Magnesium Stearate (vegetable source). Manufacturer's Directions: As a dietary supplement, take 1 Vcap® daily as needed. Best taken without protein.