Dietary Supplement Gamma-Aminobutyric Acid Supports a Calm Mood GABA (gamma-aminobutyric acid) is an amino acid derivative and a key inhibitory neurotransmitter. Neurotransmitters are chemical messengers that carry information between nerve cells or from nerve cells to other target cells. GABA is synthesized directly from glutamic acid. It has an inhibitory effect on the firing of neurons and supports a calm mood. Suggested Use 1/4 teaspoon daily. Other Ingredients Suitable for vegetarians and Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance. Warnings Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product. Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.