Serious deficiencies require medical injections. However ... Which is better: B12 or B complex? Unlike vitamin B12 supplements, B complex supplements contain a blend of multiple B vitamins ...

B12 shots can have mild side effects like diarrhea and swelling at the injection site ... If you think you might have a vitamin B deficiency, your doctor can test your blood levels and discuss ...

Known as the B complex, these vitamins work individually and also ... as your own doctor delivered it, as an injection. Vegans and vegetarians, who don’t eat animal products, must make a special ...

Excessive alcohol consumption damages the stomach lining, reducing intrinsic factor production and leading to Vitamin B12 ...