Medicine Overview of Actifol 15mg Tablet
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 the patient has recovered completely from the toxic effects of the prior treatment course.
Intramuscular
Folate-deficient megaloblastic anaemia
Adult: Up to 1 mg/day.
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Fluorouracil: Folinic acid may increase the toxicity associated with fluorouracil if the two are administered together. Some adverse effects that have occurred, particularly in elderly patients, include severe enterocolitis, diarrhea, and dehydration.
Sulfamethoxazole-trimethoprim: A potential drug interaction exists with concomitant use of sulfamethoxazole-trimethoprim and folinic acid. Folinic acid has been shown to decrease the efficacy of sulfamethoxazole-trimethoprim in the treatment of pneumocystis carinii, a common cause of pneumonia in AIDs patients
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