can b12 injections cause diarrhea Best Vitamin for Managing Vitamin B12 Deficiency Symptoms — Mountainside Medical Can Vitamin B12 Cause Diarrhea

This includes: Adults over the age of 60 People with digestive conditions such as coeliac disease or Crohns Those following vegan or mostly plant-based diets Anyone with a history of gastric surgery or long-term use of certain medications (such as proton pump inhibitors) Individuals with limited intake of animal products These factors can all reduce either your intake of B12 or your bodys ability to absorb it effectively

Supplements are a practical way for some people to ensure they meet their daily vitamin B12 requirements

But high blood levels of B12 do not mean symptoms are well treated

Commonly reported issues include: Mild irritation or redness at the injection site Headaches Fatigue Nausea These effects tend to resolve quickly and do not usually require medical intervention