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Care365 medication guide
Nitrofurantoin
Used for selected lower urinary tract infections, not self-treatment of fever or flank pain.
Drug information
Uses, directions and safety information for Nitrofurantoin.
What it is used for
Used for selected lower urinary tract infections, not self-treatment of fever or flank pain.
How to use it
Take the exact prescribed formulation and course. Four-times-daily and twice-daily products must not be substituted by schedule alone.
Before use
Renal function and G6PD deficiency need review. Avoid at term/labour and in newborns.
Possible side effects
Nausea, vomiting and abdominal discomfort.
When to get medical help
New cough, breathlessness, jaundice, numbness or severe rash need prompt assessment.
Medicines and interactions
Review probenecid and magnesium-trisilicate antacids.
Pregnancy and breastfeeding
Pregnancy and breastfeeding require review, especially near delivery or with a newborn/G6PD-deficient infant.
Missed doses, storage and accidental exposure
Follow your own product’s missed-dose instructions. If you are unsure, ask a pharmacist before taking an extra dose. Contraceptives, injections and modified-release medicines may need a specific plan.
Keep the original packaging and follow its storage, expiry and disposal instructions. Keep medicines away from children and pets. Ask about refrigeration, after-opening limits and safe sharps disposal when relevant.
For suspected overdose or accidental swallowing, contact poison control or urgent medical care promptly. Call emergency services for breathing difficulty, collapse or a seizure.
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Related condition guides
Learn about concerns where this medication may be discussed. Treatment depends on your individual assessment.
Prescription renewal and medication review
For a review of Nitrofurantoin, have your current dose, reason for treatment, remaining supply, benefits, side effects and pharmacy details ready. Ask your pharmacist or prescriber whether a renewal assessment is available and appropriate. A prescription or renewal is not guaranteed.
Questions about Nitrofurantoin
What is Nitrofurantoin used for?
Used for selected lower urinary tract infections, not self-treatment of fever or flank pain.
How should I use Nitrofurantoin?
Take the exact prescribed formulation and course. Four-times-daily and twice-daily products must not be substituted by schedule alone.
What side effects can Nitrofurantoin cause?
Nausea, vomiting and abdominal discomfort.
When should I get medical help while using Nitrofurantoin?
New cough, breathlessness, jaundice, numbness or severe rash need prompt assessment.
Can Nitrofurantoin interact with other medicines?
Review probenecid and magnesium-trisilicate antacids.
What should I know about Nitrofurantoin during pregnancy or breastfeeding?
Pregnancy and breastfeeding require review, especially near delivery or with a newborn/G6PD-deficient infant.
Sources and product information
Sources checked 2026-09-08. Safety sections are highlights; consult the full product information for complete warnings and instructions.
Check the Canadian Drug Product Database by product name or DIN for current product information.
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