Nitrous oxide, or laughing gas, is commonly used as a painkiller but researchers say it could also be used to treat ...

B12 shots work fast but don’t last long. Most leaves your body within a day, though some is stored in the liver. Regular injections may be necessary to maintain steady levels, especially if you have ...

Vitamin B12 deficiency often begins in the brain, causing subtle changes in thinking and mood. These early signs can include ...

The best time to take vitamin B12 depends on why you are taking it and in what form. Learn the best timing for your needs.

Persistent fatigue, unexplained tingling of the hands or feet, sudden mood changes, and a general decline in stamina are all ...