Nutritional Supplement for mature, aging and geriatric cats and dogs. Gerivet is a procaine / vitamin based powdered nutritional supplement especially for animals experiencing the symptoms of old age. It contains factors and micronutrients that improve the general tone and condition, restore mental alertness and aid in the relief of age-related stiffness. Gerivet helps pets cope with the distressing side-effects of the aging process and helps to improve overall health. In the event that you are uncertain of your pet’s condition, please consult your veterinarian first.