Nitrofurantoin
About Nitrofurantoin
Nitrofurantoin is an oral prescription medication used to treat and prevent urinary tract infections (UTIs). It specifically targets bacteria in the bladder and urinary tract to clear up the infection. You should take this medicine exactly as prescribed to ensure the infection is completely cleared.
To get the best results, take Nitrofurantoin at evenly spaced times throughout the day and complete the full course, even if you start feeling better. Taking this medication with food or milk helps your body absorb it better and reduces the chance of an upset stomach. Drinking plenty of water during your treatment is also highly recommended to help flush bacteria out of your urinary tract.
While taking Nitrofurantoin, some people may experience mild side effects like nausea, loss of appetite, or mild stomach upset. However, if you experience more serious issues such as breathing difficulties, a persistent cough, or signs of liver damage like yellowing of your eyes or skin, stop taking the medicine and consult your doctor immediately.
Do not take this if you have severe kidney disease, as your kidneys will not be able to clear the medicine from your body properly, making it ineffective and potentially harmful. You should also talk to your doctor before starting Nitrofurantoin if you have liver problems, anemia, diabetes, or a history of lung issues.
Some medicines, like certain antacids containing magnesium, can prevent your body from absorbing Nitrofurantoin properly. Avoid drinking alcohol during your treatment, as it can worsen side effects like dizziness and stomach upset. If you are pregnant (especially in the final weeks of pregnancy), breastfeeding, or are an older adult, consult your doctor or pharmacist to ensure this medicine is safe for you.
Uses of Nitrofurantoin
• Urinary tract infections (UTIs): Nitrofurantoin treats urinary tract infections caused by bacteria like E. coli, by stopping the growth of bacteria, helping to relieve symptoms and clear the infection.
• Bladder Infection: Nitrofurantoin treats bladder infections by killing the bacteria that cause the infection, helping to relieve symptoms like burning during urination and frequent urination.
• Cystitis: Nitrofurantoin is commonly used to treat cystitis, which is inflammation of the bladder often caused by bacterial infections. It helps to alleviate symptoms and clears the infection.
• Kidney infections: Nitrofurantoin may also provide relief from the symptoms due to kidney infections that are often caused by bacteria.
Medicinal Benefits
Nitrofurantoin provides effective treatment for urinary tract infections by targeting the bacteria responsible for the infection. By concentrating in the urine and helping eliminate harmful bacteria, this medicine offers several key benefits:
- Helps Relieve Urinary Discomfort: Nitrofurantoin works directly at the site of infection within the urinary tract, helping reduce symptoms such as burning during urination, pain, and the frequent or urgent need to urinate. This can improve comfort and make daily activities easier.
- Supports Faster Recovery from Infection: By clearing the bacteria causing the infection, this medicine helps your body recover more efficiently. As the infection improves, symptoms gradually subside, helping you return to your normal routine sooner.
- Helps Prevent Infection Progression: Effective treatment of urinary tract infections can reduce the risk of the infection spreading to the kidneys or causing more serious complications. This supports a safer recovery and helps protect long-term urinary tract health.
Directions for Use
Swallow the tablet or capsule whole with a full glass of water or milk; do not crush, chew, or break it. If you are using the liquid form, shake the bottle well before each use and measure the dose carefully using a medical measuring spoon or cup, not a regular household spoon.
Always take this medication with food or milk to improve absorption and protect your stomach from irritation. Remember to follow your doctor's exact instructions and complete the entire prescribed course, even if your symptoms disappear after a few days.
Storage
Side Effects of Nitrofurantoin
Common Side Effects (Usually mild)
- Nausea or vomiting
- Loss of appetite
- Mild diarrhoea or stomach upset
- Headache or dizziness
Serious Side Effects (Consult with a doctor right away)
- Shortness of breath, chest pain, or a persistent, dry cough
- Numbness, tingling, or burning sensations in your hands or feet
- Signs of liver damage, such as yellowing of the skin or eyes, dark urine, or severe abdominal pain
- Severe, watery diarrhea that may be bloody
- A sudden rash, itching, or swelling of the face, tongue, or throat
Medicines Containing this Salt
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Drug Warnings
- Complete the full course: Never stop taking this medicine early, even if you feel completely better, as the infection can return and become harder to treat.
- Watch your urine colour: Do not be alarmed if your urine turns a dark yellow or brown colour; this is a harmless and temporary side effect of the medicine.
- Avoid magnesium antacids: Check the label of any over-the-counter heartburn medicine you take; avoid any that list magnesium trisilicate, as it reduces the effectiveness of Nitrofurantoin.
- Monitor your breathing: Contact your doctor immediately if you develop any new lung symptoms, such as a dry cough or shortness of breath, especially if you are taking this medicine long-term.
- Report nerve tingling: Tell your healthcare provider right away if you feel any unusual numbness, tingling, or weakness in your hands or feet.
Drug Interactions
Drug-Drug Interactions
- Antacids containing magnesium trisilicate: These can significantly lower how much medicine your body absorbs, making the antibiotic less effective.
- Gout medications (like probenecid or sulfinpyrazone): These can block your kidneys from passing Nitrofurantoin into your urine, which reduces its effectiveness and increases the risk of side effects in your blood.
- Live typhoid vaccine: This antibiotic may stop the oral typhoid vaccine from working properly. Do not get vaccinations while taking this medicine without consulting your doctor.
Drug-Food Interactions
- Food and dairy products: Taking this medicine with food or milk actually improves how well your body absorbs it and helps prevent an upset stomach.
- Alcohol: Drinking alcohol while taking this medicine can increase your risk of side effects like dizziness, headache, and stomach irritation.
Drug-Disease Interactions
- Kidney disease: If your kidneys do not work well, the medicine cannot reach high enough levels in your urine to fight the infection, and it can build up dangerously in your body.
- Liver disease: People with a history of liver problems should use this medicine with caution, as it can occasionally cause liver damage.
- Lung conditions: If you have asthma or other chronic lung issues, your doctor will monitor you closely, as this medicine can cause lung reactions.
- G6PD deficiency: People with this genetic condition may develop a serious blood disorder (haemolytic anaemia) if they take this medicine.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
consult your doctorNo reported interaction with Nitrofurantoin. But, It is best to consult the physician before taking medication.
Pregnancy
cautionNitrofurantoin can be safely taken by pregnant women if prescribed by the doctor. But do not take nitrofurantoin during labour and childbirth, as there's a chance that it can affect the baby's blood.
Breast Feeding
consult your doctorNitrofurantoin is excreted in breast milk. Caution should be exercised, and it is advisable to consult a doctor before using it.
Driving
unsafeNitrofurantoin may cause dizziness and drowsiness, and the patient should not drive or operate machinery.
Liver
consult your doctorIf you have or had a history or evidence of any liver-related diseases, please consult the doctor before taking medicine.
Kidney
consult your doctorNitrofurantoin is contraindicated in patients with renal dysfunction and patients with an eGFR of less than 45 ml/minute. It is advisable to consult a doctor before using it.
Children
safe if prescribedNitrofurantoin can be given to children but under child specialist medical supervision. Nitrofurantoin is prescribed to the children to treat complicated urinary tract infections.
Habit Forming
Diet & Lifestyle Advise
- Drink plenty of water: Aim to drink at least 8 to 10 glasses of water daily to flush bacteria out of your urinary tract naturally.
- Take with food or milk: Always schedule your doses around meals or snacks to maximise absorption and prevent nausea.
- Avoid irritating foods and drinks: Limit caffeine, alcohol, spicy foods, and acidic fruits (like oranges or lemons) while you have active symptoms, as these can irritate your bladder.
- Do not use magnesium-containing antacids: If you need an antacid, choose one without magnesium, as magnesium binds to the medicine and stops it from working.
Patients Concern
Disease/Condition Glossary
Bacterial infection: A bacterial infection is a condition in which harmful bacteria enter, multiply, and infect our body. It can target any body part and multiple very quickly. When you get infected with bacteria, you can experience generalized symptoms like fevers, chills, and fatigue. Bacteria are of various forms comprising commonly spherical, rod, and spiral-shaped. Bacterial infections vary from minor illnesses like sore throat and ear infections to severe brain infections like meningitis and encephalitis. Few harmful bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli. Anyone can become infected with a bacterial infection. But, people with weak immune systems or taking immunosuppressive medicine can make you more prone to bacterial infection.
Urinary tract infection (UTI): UTI is the most common infection in humans caused by microbes and can occur in any part of the urinary tract, such as the bladder, urethra, kidneys or ureters. Most urinary tract infections involve the bladder and urethra in the lower tract. It mostly occurs in women than in men. The symptoms of lower tract (bladder, urethra) infection include increased urge to urinate, bloody urine, pain with urination or pelvic pain in women. The symptoms of upper tract (kidneys, ureters) infection include vomiting, nausea, fever or back pain.
FAQs
Nitrofurantoin is used to treat bacterial infections like urinary tract infections (UTIs), including bladder infections, cystitis and kidney infections.
Nitrofurantoin kills bacteria by entering their cells and destroying their genetic material. As a result, it is effective against bacterial infections.
Nitrofurantoin belongs to the class of penicillin antibiotic. Nitrofurantoin is a broad-spectrum antibiotic effective against a wide range of bacteria. On the other hand, penicillin is a narrow-spectrum antibiotic effective against less number of bacteria.
Nitrofurantoin does not work against viral infection. So, treating common cold and cough should not be taken.
Nitrofurantoin makes your skin sensitive to sunlight, known as photosensitivity. So, prolonged exposure to sunlight or ultraviolet light should be avoided. In case of emergency, you should always wear sunscreen before going out.
No, Nitrofurantoin should be taken in the dose and duration as advised by the doctor. If you take it in more than the recommended dose, it might cause unpleasant side effects. If you think your symptoms are not improving, please consult your doctor.
Stay hydrated by drinking at least six glasses of water or other fluids. Keep your underwear clean, and use underwear made of cotton to avoid spreading infection. Always keep your bladder empty as much as possible by peeing regularly. Your doctor may prescribe cranberry juice with antibiotics to treat urinary tract infections.
Always follow your pharmacist's or doctor's advice and the instructions that come with your medicine.
Your dose of Nitrofurantoin depends on whether it's to treat or prevent a medical condition, your age, and how bad the infection is.
Nitrofurantoin can cause acute or chronic liver injury. So, inform your doctor before prescribing Nitrofurantoin about your medical condition. Your doctor will monitor your liver with blood tests and adjust the treatment if necessary.
Never take an extra dose to make up for a forgotten one. It may lead to more prone to more adverse events.
In some cases, Nitrofurantoin may cause blurred vision. It may be severe and, in some instances, permanent. So, seek medical attention immediately if you observe any symptoms related to this.
In some instances, Nitrofurantoin may cause neurological adverse effects, including headache, drowsiness, vertigo, dizziness, nystagmus (involuntary eye movement), intracranial hypertension, and peripheral neuropathy.
No, Nitrofurantoin is not a sleeping pill; it is an antibiotic medication. However, it can make you feel dizzy or sleepy.
No, Nitrofurantoin is not intended to treat anxiety. It is an antibiotic medication.
Acidic foods, spicy foods, alcohol, and caffeine can all increase UTI symptoms and nitrofurantoin side effects, so you may want to avoid these while taking the medication.
No. Even if you start feeling better, do not skip doses or stop taking Nitrofurantoin early. Complete the full course exactly as prescribed. Stopping treatment too soon may allow the infection to return and increase the risk of antibiotic resistance.
Nitrofurantoin might cause weight loss as taking it makes you feel less or not hungry (loss of appetite). However, it varies from person to person.
Swallow the tablet whole with a drink of water. Do not chew or break them. Take Nitrofurantoin with or after a meal or snack. This helps your body absorb the medicine, as well as helping to prevent stomach upset.
Nitrofurantoin can safely turn your urine a dark yellow or rusty brown colour. This is a very common and harmless reaction as your body processes and eliminates the medicine, and your urine will return to its normal colour once you finish the treatment.
Nitrofurantoin is generally considered safe during early and mid-pregnancy, but it should not be taken during the final weeks of pregnancy (near term) as it can cause blood issues in the newborn baby. Always talk to your doctor or pharmacist before taking any medication while pregnant.
Nitrofurantoin begins working within a few hours of the first dose. Many people notice improvement in urinary symptoms within 24–48 hours, but it is important to complete the full prescribed course to completely clear the infection.
You should avoid taking Nitrofurantoin on an empty stomach. Taking it with food or milk significantly improves how your body absorbs the medicine and helps prevent common side effects like nausea and stomach pain. Talk to your doctor or pharmacist for more personalised advice.
No, Nitrofurantoin is not used to treat kidney infections. The medicine concentrates quickly in the bladder urine and does not reach high enough levels in the kidney tissues to treat a deep kidney infection. Talk to your doctor to get the correct antibiotic if you suspect a kidney infection.
You should avoid taking antacids that contain magnesium trisilicate while taking Nitrofurantoin, as magnesium can bind to the antibiotic and prevent your body from absorbing it. If you need an antacid, ask your pharmacist to help you choose a compatible option.
If you develop a new or persistent dry cough, shortness of breath, or chest pain while taking Nitrofurantoin, stop taking the medicine and contact your doctor immediately. These could be signs of a rare but serious lung reaction. Talk to your doctor right away for alternative treatment options.
