Medically reviewed by Lindsay Cook, PharmD The recommended intake of vitamin B12 for people older than 14 is 2.4 micrograms a ...

You cannot overdose on vitamin B12 since it is a water-soluble vitamin. skaman306/Getty Images You cannot overdose on vitamin B12 because any excess you simply pee out. If you get b12 shots, you may ...

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 ...

Supplements containing as much as 12.5 times the recommended daily dose of vitamins are being sold on online marketplaces, according to research by Which?.

Dear Dr. Roach: I’m a vegan, and my multivitamin is my only source of B12. It states I’m getting 200% of my daily requirement. Is that sufficient? Dear M.E.: People who are strict vegans — that is, ...

Supplements containing as much as 12.5 times the recommended daily dose of vitamins are being sold on online marketplaces, ...