Macrobid

Nitrofurantoin, the active ingredient in Macrobid, is a nitrofuran antibiotic presented as oral tablets for oral use. It treats uncomplicated urinary tract infections caused by susceptible bacteria, primarily in adult women. GNH USA supplies Macrobid as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Macrobid, a nitrofuran antibiotic, is used to manage infections of the urinary tract. - Uncomplicated urinary tract infection (cystitis): eradicates susceptible bacteria in the bladder, relieving symptoms such as dysuria and frequency. - Prevention of recurrent urinary tract infection: reduces the risk of repeat infections when used as a prophylactic regimen. - Acute uncomplicated lower urinary tract infection: provides bactericidal activity to clear early‑stage infections in the lower urinary system.

Common Side Effects: - Nausea: mild to moderate upset stomach. - Loss of appetite: reduced desire to eat. - Headache: transient cranial discomfort. - Diarrhea: loose stools, usually self‑limiting. - Mild rash: skin redness or itching. - Metallic taste: altered taste sensation.

Serious or Rare Side Effects: - Pulmonary toxicity: interstitial lung disease or fibrosis. - Liver injury: hepatitis or cholestasis. - Severe allergic reaction: anaphylaxis or angioedema. - Hemolytic anemia in G6PD deficiency. - Peripheral neuropathy: tingling or numbness. - Stevens‑Johnson syndrome or toxic epidermal necrolysis.

Before initiating therapy, consider patient‑specific factors and monitor for adverse events. - Renal function assessment: ensure adequate creatinine clearance before use. - G6PD deficiency: avoid due to risk of hemolysis. - Pregnancy: contraindicated in late pregnancy (third trimester). - Pulmonary monitoring: discontinue if respiratory symptoms develop. - Duration of therapy: limit to the shortest effective course. - Store at ambient temperature: keep below 25°C, retain in original packaging, protect from moisture.

Nitrofurantoin may interact with other medicines, altering its efficacy or safety. Major Interactions (Avoid): - Antacids containing magnesium or aluminum: reduce absorption of nitrofurantoin. - Probenecid: increases nitrofurantoin plasma concentrations, raising toxicity risk. - Warfarin: may enhance anticoagulant effect, requiring INR monitoring. Moderate Interactions (Monitor Closely): - NSAIDs: potential additive renal impairment. - Diuretics: may affect renal excretion of nitrofurantoin. - Oral contraceptives: possible reduction in contraceptive effectiveness.