b12 5000 mcg injection CYANOCOBALAMIN Vitamin Injectable Solution for Horses, 5000-mcg, 100-mL - Easy Refills 12 intake or intestinal malabsorption in swine and horses Sold in a 100 mL vial Why Use It Certain health conditions could cause Vitamin B12 deficiency Vitamin B12 Injection5000 mcg/mL Injectable