Vitamin B 12 Injectable for Horses, Dogs and Cats Jeffers VetOne Cyanocobalamin Vitamin B 12 Sterile Solution, 1,000 mcg mL, 100 mL at Tractor Supply Co Horse Vitamins Injectable at Tractor Supply Co. Vitamin B 12 1000 Injection (VetOne), 100 mL FBN Vitamin B D B12 Injections Near Ne Wilmington Urgent Care Clinic Wilmington Urgent Care And Family Clinic Durvet High Level Vitamin B Complex Livestock Supplement, 250 mL at Tractor Supply Co