DEAR DR. ROACH: I am 73, and I was worried about dementia. Turns out, I am “normal.” However, the neurologist told me to take 2,000 mcg of B12 daily. My multivitamin has 100 mcg, which is 4,167% of ...

Vitamin B12 overdose is so rare that serious adverse effects from consuming large amounts of vitamin B12 have only been reported in a handful of studies in the medical literature. It’s effectively ...

Medically reviewed by Gurdeep S. Sareen, PharmD Key Takeaways Magnesium and vitamin B12 play essential roles in energy production in the body. Limited research supports taking magnesium and vitamin ...

Q: Years ago, I started taking a vitamin B12 supplement. Over the past few years, I have had disabling pain in my feet diagnosed as nondiabetic neuropathy. The primary symptoms were burning, stabbing ...

People over age 60 who are feeling fatigued, depressed or experiencing numbness or tingling in the hands and feet may be experiencing a vitamin B12 deficiency. “If you have vitamin B12 deficiency, ...

Metformin is the first therapy for almost everyone with type 2 diabetes, but studies show that the drug creates a risk of vitamin B12 deficiency. Your clinician should test your B12 levels regularly ...