should you refrigerate b12 injections can what happens if inject expired Do B12 Need to Be Refrigerated: 6 Cool does vitamin b12 injection need – Sublingual B12 vs. B12 Injections:

Although every patient reacts differently, some people may experience side effects around the area of the injection site, such as ...skin irritation, muscle ache, redness, mild swelling, or temporary dizziness

It could be a sign of low B12 levels

Deficiency is particularly common in elderly people because the ability to absorb vitamin B12 can decrease with age

When your body isnt getting enough vitamin B12, red blood cells become enlarged making it harder for them to move in your bloodstream

When discussing B12 supplements, two forms commonly available are methylcobalamin and cyanocobalamin

It is common among pregnant women