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Ofuran SR 100mg (Tablet)

Manufactured by: Pacific Pharmaceuticals Ltd.

Nitrofurantoin Similar medicine

Ofuran SR is indicated for Uncomplicated UTI

Precautions and warnings

Elderly. Monitor hepatic and pulmonary function during prolonged therapy. Pre-existing pulmonary, hepatic, neurological, or allergic disorders, predisposition to peripheral neuropathy e.g. renal impairment, anaemia, DM, electrolyte imbalance, debility, vitamin B deficiency. Withdraw if signs of peripheral neuropathy occur. Lactation.


Nausea, vomiting, anorexia, abdominal pain, diarrhoea; headache, drowsiness, vertigo, dizziness, nystagmus, benign intracranial hypertension; rash, urticaria, pruritus, fever, sialadenitis, angioedema, erythema multiforme, exfoliative dermatitis, pancreatitis, lupus-like syndrome, myalgia, arthralgia; acute pulmonary sensitivity reactions; megaloblastic anaemia, leucopenia, granulocytopenia or agranulocytosis, thrombocytopenia, aplastic anaemia, haemolytic anaemia (in G6PD-deficient patients); transient alopecia; brownish discolouration of urine.
Potentially Fatal: Peripheral polyneuropathy, hepatotoxicity, anaphylaxis, Stevens-Johnson syndrome, interstitial pneumonitis, pulmonary fibrosis.

Drug Interactions

Reduced excretion with probenecid or sulfinpyrazone. Absorption reduced by magnesium trisilicate. Antagonistic effects with quinolone antibacterials. Reduced effects with carbonic anhydrase inhibitors or urinary alkalinisers.


Severe renal impairment (anuria, oliguria, significantly elevated serum creatinine, CrCl

Mode of actions

Nitrofurantoin interferes with cell metabolism and cell wall synthesis by inhibiting several enzyme systems including acetyl coenzyme A. It is bactericidal to most gram-positive and gram-negative urinary tract pathogens.

Dosage & Administration

Acute uncomplicated urinary tract infections
Adult: 50-100 mg 4 times daily for 7 days. Dual-release preparation: 100 mg bid.
Child: >3 mth and older children: 3 mg/kg daily in 4 divided doses.

Prophylaxis of uncomplicated urinary tract infections
Adult: 50-100 mg at bedtime.
Child: >3 mth and older children: 1 mg/kg once daily.

Pregnancy & Lactation

Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women OR Animal studies have shown an adverse effect, but adequate and well-controlled studies in pregnant women have failed to demonstrate a risk to the fetus in any trimester.