Vitamin B 12 Injection, 3,000 mcg ml VetOne Cyanocobalamin Vitamin B 12 Sterile Solution, 1,000 mcg mL, 100 mL at Tractor Supply Co Where to find injectable vitamin B for storage? Rooster Booster Sheep and Goat B12 Liquid Supplement, 16 oz. at Tractor Supply Co Vitamin B 12 Injection, 5,000 mcg mL, 100 mL at Tractor Supply Co Vitamin B 12 for Animal Use Generic (brand may vary) Valley Vet Supply Safe.Pharmacy Vitamins