He's studying leucovorin, an inexpensive, generic drug derived from folic acid, also known as folate or vitamin B9. Leucovorin is currently prescribed to ease the side effects of cancer chemotherapy.

Taking a higher dose of folic acid during the first trimester of pregnancy was safe and associated with improved verbal ...

Algae-S powder 90.314mg, methylcobalamin 2mg, N-acetylcysteine 600mg; caplets. Avoid if renal stones occur. Do not administer to critically ill patients. Folic acid may mask Vit.B 12 deficiency ...