sublingual b12 vs injection Vitamin Injections vs. Supplements: Which Works Best? The Advantages of B12 Injections

Why B12 matters to dogs At a cellular level, vitamin B12 performs many important functions (see here for even more nerdy details)

Some of the serious side effects of Vitamin B12 include serous allergic reaction, narrowing or blocking of blood vessels, thrombocytosis (a disorder where your body produces too many platelets), low potassium levels in body, pulmonary edema (a condition where there is excess fluid in the lungs) and congestive heart failure

In cases of severe deficiency, a course of injections may be given over several weeks before transitioning to maintenance treatment

The NHS gives its standard hydroxocobalamin treatment as an intramuscular injection, usually delivered by a nurse or doctor

It also supports nerve function and cognitive health, making it important for mental clarity and focus