Oral Antidote for methotrexate toxicity Adult: 15 mg every 6 hr for 10 doses starting 24 hr after the start of methotrexate infusion. Continue admin until serum levels of methotrexate is <0.05 micromolar. May also be given via IM/IV inj. Folate-deficient megaloblastic anaemia Adult: 15 mg daily. Intravenous Adjunct to fluorouracil in colorectal cancer Adult: 200 mg/m2 BSA by slow IV inj over at least 3 min followed by 370 mg/m2 fluorouracil by IV inj. Treatment is given for 5 consecutive days and repeated at intervals of 28 days for 2 courses. Subsequently, may repeat at 4-5 wkly intervals if...