Natural Factors Stress-Relax 100% Natural GABA provides fast-acting relief to help promote relaxation. Gamma-aminobutyric acid (GABA) is an important brain compound that helps support cognitive function. Unlike synthetic GABA, our formula is made with Pharma GABA®, which provides a superior source and naturally produced form of this compound that is easily absorbed. Convenient chewable tablets in tropical fruit flavour help to quickly promote relaxation and ease nervous tension.