can b12 injections give you diarrhea Vitamin Cause or Make Poop More? do b12 injections cause diarrhea

The injections are usually given intramuscularly, often in the upper arm or thigh

2008;29(2 Suppl):S143-172

Delivery was precise

While oral B12 supplements are available, vitamin B12 injections have advantages including enhanced absorption since it bypasses digestion, a fast-acting energy boost from quick absorption, higher blood levels reached versus pills, lasting benefits between maintenance doses, improved concentration and mental clarity, and often more affordable and convenient long-term

It is administered as a small subcutaneous injection, typically once daily, and is most often deployed in 6 to 12 week structured cycles under medical supervision