AuRx is a medical food specially formulated to provide butyric acid in a single molecule form. AuRx butyric acid is trapped in a specialized food matrix with a release agent that insures solubility and maximum absorption while minimizing the odor and disagreeable taste normally found in butyric acid and is capsule-free. This product is designed to provide specific nutritional requirements for ASD patients with gut microbiome deficiencies as evaluated by a medical professional.