Should be taken on an empty stomach: Ensure adequate hydration. Swallow whole, do not chew/crush.
Pregnancy (1st trimester) & lactation.
Bone marrow suppression, seizures in childn with nephrotic syndrome, nausea, vomiting, diarrhoea, oral ulceration. Rarely, irreversible bone marrow failure, allergic reactions, Stevens-Johnson syndrome, toxic epidermal necrolysis, seizures, movement disorders, interstitial pulmonary fibrosis, interstitial pneumonia, hepatotoxicity, jaundice, sterile cystitis, drug fever
Pregnancy Category D. There is positive evidence of human foetal risk, but the benefits from use in pregnant women may be acceptable despite the risk (e.g., if the drug is needed in a life-threatening situation or for a serious disease for which safer drugs cannot be used or are ineffective).
Monitor FBC closely. Bone marrow suppression reversible only if withdrawn early enough. Should not be given to patients who have recently undergone radio- or chemotherapy. In lymphocytic infiltration of bone marrow or hypoplastic bone marrow, max daily dose is 0.1 mg/kg. Childn with nephrotic syndrome, patients on high pulse dosing regimens, history of seizure disorders. Renal or hepatic impairment. Ensure adequate contraceptive precautions. Pregnancy.