Methotrexate

Methotrexate (formerly Amethopterin)an antimetabolite originally usedtreat many kindscancer. More recentlyhas come into use astreatmentsome autoimmune diseases, including psoriasisarthritis. It can be taken orally or by injection. Possible side effects can include anemia, increased riskbruising,nausea.

Chemically methotrexateN-[4-(2,4-di[[amino-6-pteridinyl)methyl]methylamino]benzoyl]-L-glutamic acid.