Health experts warn that combining certain supplements—or taking them at the wrong time—can block nutrient absorption, cause ...

Vitamin B12 deficiency can be caused by poor diet or malabsorption, leading to fatigue, muscle weakness, and memory problems.

By Dr. Liji Thomas, MD A new scientific review weighs natural and synthetic forms of vitamin B12, revealing where ...

Eight patients were treated during relapse with intramuscular injections of crystalline vitamin B 12. Three received daily for ten days 2.0 microgm. and thereafter, on the eleventh and twenty-first ...

Vitamin B12 is important for the health of your nervous system and your red blood cells. It can be found in many animal products and fortified foods. In the United States, about 6% of people under age ...

Vitamin B12 is an essential nutrient for good health. Some of the best sources of vitamin B12 include meat, fish, eggs, fortified foods, and supplements. It may also be advisable to limit or avoid ...

Take vitamin B12 on an empty stomach in the morning or early afternoon to maximize absorption and avoid sleep disruptions. Vegans, older adults, and those with certain health conditions affecting ...

The elderly often report nutritional deficiency and rely on taking multivitamins. Now, new research from Mass General Brigham ...

This essential vitamin is generally considered safe, even at high doses. However, most people get enough B12 through diet alone, and unnecessary supplementing may lead to negative side effects.

Turns out some can, at least partially, cancel out the benefits of others.