B12 Injections: Who Should Get Them and How Long Do They Last? B12 vitamin Store Vitamin B12 Injection 1000mcg 1ml Ampul packed per 10 ampules Vitamin B 12 Injectable Solution Santa Cruz Animal Health Vitamin B 12 intramuscular injections are also used therapeutically to help restore energy and combat various symptoms related to such deficiencies. Vitamin B 12 is essential to the development of healthy blood cells, nerve Kernow Vitality