A: Keep sealed, cool, and dry
However, some people cannot take vitamin B12 injections safely, including those with Lebers disease or similar eye concerns, kidney disease, liver disease, iron or folic acid deficiency, an active infection, or those taking medications that may interact with vitamin B12
Signs of Vitamin B12 Deficiency Some common signs that you may be deficient in Vitamin B12 include fatigue or tiredness, weakness, difficulty concentrating or thinking clearly, pale skin, dizziness or light-headedness, loss of appetite, weight loss, constipation or diarrhea, numbness or tingling in the hands and feet, sore tongue, headaches and vision problems
As a supplement, Vitamin B12 is often used for anaemia, tiredness, anxiety and weight gain