Vetri DMG liquid is an easy to use immune support supplement for cats and dogs. Dmg a/K/a N, N-Dimethylglycine is an adaptive. An adaptive allows an already functioning process to function more efficiently, even in times of stress. It does this by helping the body absorb nutrients more efficiently at the cellular level. Dmg has been recognized as an immune system support product, has been clinically studied, and has been used in both the human and veterinary worlds for over 30 years with no adverse or negative side effects!