methotrexate dosing
is weekly not daily
daily is fatal
max is 20mg/week
methotrexate SE
M-mucositosis,myleosupression E T H-hepatoxicity O- phOtosensitivity T R-Renal (give bicarb to keep urine alkaline), Rash E X-Preg. Cat. X, Chest X-ray(pulmonary fibrosis)
avoid which antibiotic with methotrexate
bactrim, bc increase risk of mtx toxicity
methotrexate is
an antimetabolite and s phase toxic and folic acid structural analog
washout procedure for leflunomide (arava)
cholestyramine 8 grams tid for 11 days
leflunomide, mtx, and azathioprine are
not to be used in pregnancy
allopurinol and febuxostat are
xanathine oxidase inhibitors
must decrease dose of azathioprine