Butafosfan 10% & Vitamin B12 Injection Vet Clinic Veterian Anthelmintic with High Quality for Sheep, Goat, Cattle, Cow SMARTSHOT is a long lasting B12 injection which depending on dose rate, can reach and maintain adequate B12 and selenium levels for 6+ months. Using SMARTSHOT at weaning ensures your ewe replacements are Lamb's rear foot problem after B12 injection? Vitamin B 12 Injectable Solution 1000mcg mL 100mL vial