b12 injectable solution for humans Compounded Methylcobalamin (Vitamin B12) Injection, 5mg/mL sheep and swine as needed Used to help prevent and treat cases of vitamin B Vitamin B-12 Injection, 1,000 mcg/mL

Lautrup S, et al

Demonstrable improvements, such as medications are viewed as lifesaving (Emotional bonding theme), indicated that a positive response to treatment is more likely to encourage treatment adherence for pets with chronic conditions

Frequency Based on Severity : Mild deficiency : Injections may be needed every 3-6 months

A sick pet leads to making lifestyle adjustments including cutting back on other expenses to pay veterinary fees (Theme 5: Daily and lifestyle adjustments, section 3.5.4)

They build up slowly over months

Since it doesnt list B (often called cyanocobalamin on labels), that confirms youd need a separate source for B