Nitrofurantoin Q Pharma

Active Ingredient:: Nitrofurantoin, Macrocrystalline
Origin:: EU

Nitrofurantoin Q Pharma (Nitrofurantoin, Macrocrystalline)

Q: What is Nitrofurantoin Q Pharma used for?

Nitrofurantoin Q Pharma is an oral nitrofuran antibiotic indicated for the treatment of uncomplicated urinary tract infections, including acute cystitis, and for prophylaxis of recurrent infections in adults.

Q: How does nitrofurantoin work?

Nitrofurantoin is reduced by bacterial enzymes to reactive intermediates that damage bacterial DNA, ribosomal proteins and cell‑wall precursors, disrupting carbohydrate metabolism and leading to bacteriostatic or bactericidal activity against common urinary pathogens.

Q: What is the usual dose of Nitrofurantoin Q Pharma?

The prescribed dose of Nitrofurantoin Q Pharma is determined by the treating clinician based on the infection severity, patient renal function and local guidelines. Dosage regimens are not disclosed here.

Q: Is Nitrofurantoin Q Pharma safe in pregnancy or breastfeeding?

Nitrofurantoin is classified as pregnancy category B, indicating no evidence of risk in animal studies and limited human data. It may be used during pregnancy when clearly needed, but should be avoided in the last weeks of gestation. Small amounts are excreted in breast milk; benefits and risks should be weighed.

Q: How do I order Nitrofurantoin Q Pharma from GNH India?

To order, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any required import documentation.

Q: How does Nitrofurantoin compare with other urinary antibiotics?

Compared with agents such as trimethoprim‑sulfamethoxazole or fluoroquinolones, nitrofurantoin has a narrow spectrum focused on lower‑tract pathogens and a low propensity for promoting resistance. It is not suitable for systemic infections but offers a favorable safety profile for uncomplicated cystitis when renal function is adequate.

Q: What are the storage and handling requirements for Nitrofurantoin Q Pharma?

Store the product below 25 °C in a dry place, keeping it in the original packaging to protect from moisture and light. Do not expose the tablets to excessive heat or humidity, and keep them out of reach of children.

Q: How is Nitrofurantoin Q Pharma administered?

Nitrofurantoin Q Pharma is taken orally, usually with food or a full glass of water to improve absorption and reduce gastrointestinal irritation. The exact dosing schedule should follow the prescribing clinician’s instructions.

Q: What are the most serious risks associated with Nitrofurantoin Q Pharma?

Serious risks include pulmonary toxicity (interstitial pneumonitis or fibrosis), hepatic injury, hemolytic anemia in patients with G6PD deficiency, severe allergic reactions, and peripheral neuropathy. Patients should seek immediate medical attention if they experience respiratory symptoms, jaundice, dark urine, rash or numbness.

Q: Who should not use Nitrofurantoin Q Pharma?

Nitrofurantoin Q Pharma is contraindicated in patients with severe renal impairment (creatinine clearance <60 mL/min), known hypersensitivity to nitrofurantoin, G6PD deficiency, and in late pregnancy (≥ 38 weeks). Caution is also advised for individuals with a history of pulmonary or hepatic disease.

Nitrofurantoin, the active ingredient in Nitrofurantoin Q Pharma, is a nitrofuran antibiotic presented as a macrocrystalline oral formulation for systemic use. It treats uncomplicated urinary tract infections, especially cystitis, in adult patients and is indicated for short‑course therapy.

GNH India supplies Nitrofurantoin Q Pharma as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Q Pharma Kft.

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Indications & Clinical Uses

Nitrofurantoin is used to treat bacterial infections of the lower urinary tract.

Uncomplicated urinary tract infection: eradicates susceptible uropathogens and resolves symptoms.
Cystitis: provides rapid relief of dysuria, frequency and urgency while clearing the infection.
Prophylaxis of recurrent urinary tract infection: reduces the incidence of repeat episodes when taken as prescribed.

How It Works

Nitrofurantoin is reduced by bacterial flavoproteins to reactive intermediates that damage bacterial DNA, ribosomal proteins and cell wall precursors. This multi‑target inhibition disrupts carbohydrate metabolism and cell wall synthesis, leading to bacteriostatic or bactericidal activity against common urinary pathogens such as Escherichia coli and Staphylococcus saprophyticus.

Side Effects

Adverse reactions may range from mild to severe and should be monitored during therapy.

Common Side Effects

Nausea: transient stomach upset occurring early in treatment.
Diarrhea: loose stools that usually resolve without intervention.
Headache: mild to moderate pain often improving with hydration.
Metallic taste: temporary alteration of taste perception.

Serious or Rare Side Effects

Pulmonary toxicity: interstitial pneumonitis or fibrosis requiring discontinuation.
Hepatic injury: elevated liver enzymes or hepatitis.
Hemolytic anemia in G6PD‑deficient patients: sudden drop in hemoglobin.
Severe allergic reactions: rash, angioedema or anaphylaxis.
Peripheral neuropathy: numbness or tingling in extremities.

Precautions & Warnings

Nitrofurantoin should be prescribed with attention to patient‑specific factors and safety considerations.

Renal function assessment: avoid use when creatinine clearance is <60 mL/min.
Pregnancy category B: generally safe in pregnancy but use only if clearly needed.
Breastfeeding: small amounts excreted in milk; weigh benefits against potential infant exposure.
G6PD deficiency: contraindicated due to risk of hemolysis.
Monitor for pulmonary symptoms: discontinue if cough or dyspnea develop.
Store below 25°C: keep in the original pack, protect from moisture.

Avoid Interactions

Nitrofurantoin may interact with other medicines, altering its efficacy or safety.

Major Interactions (Avoid)

Antacids containing magnesium or aluminum: reduce absorption; separate dosing by at least 2 hours.
Probenecid: decreases renal excretion, increasing toxicity risk.
Warfarin: may potentiate anticoagulant effect; monitor INR closely.

Moderate Interactions (Monitor Closely)

NSAIDs: may increase risk of renal impairment.
Diuretics: can exacerbate reduced renal clearance.
High‑dose vitamin C: may acidify urine and affect drug stability.
Oral contraceptives: potential reduction in contraceptive efficacy; advise backup method.

Frequently Asked Questions

Nitrofurantoin Q Pharma is an oral nitrofuran antibiotic indicated for the treatment of uncomplicated urinary tract infections, including acute cystitis, and for prophylaxis of recurrent infections in adults.

Nitrofurantoin is reduced by bacterial enzymes to reactive intermediates that damage bacterial DNA, ribosomal proteins and cell‑wall precursors, disrupting carbohydrate metabolism and leading to bacteriostatic or bactericidal activity against common urinary pathogens.

The prescribed dose of Nitrofurantoin Q Pharma is determined by the treating clinician based on the infection severity, patient renal function and local guidelines. Dosage regimens are not disclosed here.

Nitrofurantoin is classified as pregnancy category B, indicating no evidence of risk in animal studies and limited human data. It may be used during pregnancy when clearly needed, but should be avoided in the last weeks of gestation. Small amounts are excreted in breast milk; benefits and risks should be weighed.

To order, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any required import documentation.

Compared with agents such as trimethoprim‑sulfamethoxazole or fluoroquinolones, nitrofurantoin has a narrow spectrum focused on lower‑tract pathogens and a low propensity for promoting resistance. It is not suitable for systemic infections but offers a favorable safety profile for uncomplicated cystitis when renal function is adequate.

Store the product below 25 °C in a dry place, keeping it in the original packaging to protect from moisture and light. Do not expose the tablets to excessive heat or humidity, and keep them out of reach of children.

Nitrofurantoin Q Pharma is taken orally, usually with food or a full glass of water to improve absorption and reduce gastrointestinal irritation. The exact dosing schedule should follow the prescribing clinician’s instructions.

Serious risks include pulmonary toxicity (interstitial pneumonitis or fibrosis), hepatic injury, hemolytic anemia in patients with G6PD deficiency, severe allergic reactions, and peripheral neuropathy. Patients should seek immediate medical attention if they experience respiratory symptoms, jaundice, dark urine, rash or numbness.

Nitrofurantoin Q Pharma is contraindicated in patients with severe renal impairment (creatinine clearance <60 mL/min), known hypersensitivity to nitrofurantoin, G6PD deficiency, and in late pregnancy (≥ 38 weeks). Caution is also advised for individuals with a history of pulmonary or hepatic disease.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated: 27 Sep 2026

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