Xylazine Xzin is veterinary formulation which is indicated to be used for horses, cattle, and dogs. It is prescribed for treatment of analgesia, muscles cramps, and for sedation purpose. Active compound present in this injection has molecular formula C12H16N2S with molar mass of 220.33 g/mol. It is considered as a potent alpha-2 adrenergic agonist which is known to get distributed in body within 30 to 40 minutes. Xylazine Xzin works by stimulating central alpha-2 receptors and peripheral alpha adrenoreceptors.