US$ 23.34
animal b12 injection Troy Vitamin – vet-n-pet DIRECT sheep and swine as needed Veterinary Drug Copper + Vitamin
Description
This can cause tiredness, weakness, and shortness of breath

When deficiency is suspected based on clinical features (fatigue, paraesthesia, cognitive changes) or risk factors (vegan diet, gastric surgery, certain medications), serum B12 measurement guides appropriate intervention

B12 can also be constructed artificially, so you may also find it added to many food products

Vendors who can't answer any of them are worth a closer look
