Methotrexate is a medication for the treatment of rheumatoid arthritis. However, it can cause folic acid deficiencies, so simultaneous methotrexate and folic acid supplementation may be necessary.

Folic acid is a synthetic version of folate (vitamin B9) — an essential vitamin that your body cannot make itself. As such, you need to obtain folate through your diet to meet your daily needs. Good ...

Folic acid, also known as vitamin B9, is a form of vitamin B that helps your body make and maintain new cells. It’s essential for everyone, but it’s especially important during pregnancy because it ...

Folic acid is the human-made version of folate, a B vitamin that plays several roles in the body. During pregnancy, one of its most important functions is preventing a group of birth abnormalities ...

Taking high doses of folic acid supplements may cause side effects, including accelerating mental decline in older adults and increasing the likelihood of cancer recurring. Folic acid is the synthetic ...

A new review reveals how folic acid can act as both a friend and foe in breast cancer, protecting at moderate doses, but potentially fueling tumor growth when intake is excessive or genes go awry.