what colour is b12 injection B-12 vitamin shot pre convention! Vitamin B12 - Wikipedia

Oral administration introduces too many variables: fed vs fasted state, gut transit time, individual differences in hepatic enzyme expression, co-administration of CYP3A4 inhibitors or inducers

Pink for B12-containing formulations

It should also be avoided in people with peanut or soybean allergy

The mechanistic literature leans against a classic tolerance effect, not toward it

Some people may experience minor side effects such as: Mild redness or swelling at the injection site A feeling of warmth or flushing Headache or dizziness Slight nausea or an upset stomach Rarely, an allergic reaction If you have any concerns after receiving your injection, please contact the clinic