Why Do You Need B12 Injections? PA Relief Vitamin B 12 Injectable for Horses, Dogs and Cats Jeffers How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Cyanocobalamin 1,000 mcg mL Injection 1 mL McKesson Everywhere you turn nowadays, people are harping on about B12 injections. It's obvious why, though: they are especially good in the autumn winter months when many of us look and feel a bit VITAMIN B12 INJECTIONS Joanna Puddle