Nitrofurantoin
$0.43
Nitrofurantoin is an antibiotic used specifically for urinary tract infections and to prevent repeated bladder infections.
Drug Information
13 reviews for Nitrofurantoin
Nitrofurantoin is an antibiotic made especially for bladder infections (urinary tract infections, or UTIs). It collects in the urine, where it kills the bacteria causing the infection.
It is often a first choice for simple bladder infections in women, and a low dose is sometimes used to prevent repeated infections.
What is it used for?
- Simple bladder infections (cystitis)
- Preventing repeated bladder infections
How does it work?
Nitrofurantoin is turned into active substances inside bacteria that damage their DNA and proteins, so they die. Because it gathers in the urine, it works right where the infection is.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- Do not take it if you have ever had an allergic reaction to this antibiotic or to a similar one.
- Antibiotics only work on infections caused by bacteria. They do not help colds, flu or most sore throats, which are caused by viruses.
- Take the whole course your doctor gives you, even if you feel better after a few days. Stopping early can let the infection come back and make germs harder to treat in the future.
- Tell your doctor if you are pregnant, trying for a baby or breastfeeding.
- Never share your antibiotics or keep leftovers for another time.
- Do not take it if you have moderate or severe kidney problems, because it will not work well and side effects are more likely.
- Do not take it in the last weeks of pregnancy or give it to babies under 3 months.
- Tell your doctor if you have lung, liver or nerve problems, G6PD deficiency or diabetes.
- It does not treat kidney infections. See a doctor if you have a high fever, back pain or shivering.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Nitrofurantoin can cause side effects, but not everybody gets them.
Common side effects
- Feeling sick (nausea) or being sick
- Diarrhoea or loose stools
- Stomach ache or indigestion
- Dark yellow or brown urine (this is harmless)
- Loss of appetite or headache
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Severe diarrhoea that is watery or has blood in it, even up to 2 months after you finish the medicine
- Signs of an allergic reaction, such as a rash, swelling of the face, lips or tongue, wheezing or trouble breathing
- A skin rash that blisters or peels, with fever and sore mouth or eyes
- New cough, chest pain, shortness of breath or fever (possible lung reaction)
- Numbness or tingling in the hands or feet
- Yellowing of the skin or eyes
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Take it exactly as your doctor tells you, usually 2 to 4 times a day.
- Take each dose with food or milk. This helps your body absorb it and reduces stomach upset.
- A common adult dose is 100 mg twice a day (slow-release) or 50 mg to 100 mg four times a day, usually for 3 to 7 days.
- For prevention, a single 50 mg to 100 mg dose is often taken at bedtime.
If you miss a dose: Take it as soon as you remember. If it is nearly time for your next dose, skip the missed one and carry on as normal. Never take two doses at once to make up.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Keep it in its original pack at room temperature (below 25°C / 77°F), away from heat, damp and direct sunlight. Do not use it after the expiry date.
- QWhy is my urine brown on Nitrofurantoin?
- A
Nitrofurantoin can turn urine dark yellow or brown. This is harmless and goes away after you stop.
- QHow fast does Nitrofurantoin work?
- A
Most people feel better within 1 to 3 days. If you feel worse, or get fever or back pain, see a doctor.
- QShould I drink a lot of water with a bladder infection?
- A
Drinking enough to keep your urine pale helps, but you do not need to drink huge amounts.

Ali Bell –
First time ordering here and it was a pleasant surprise. I could follow the shipment and it arrived as scheduled. I had a quick question and the support team replied fast. Ordering was straightforward from start to finish. I would order here again.
Meera Said –
I ordered from here after comparing a few options. Everything inside was snug and protected. It came in a reasonable amount of time. All good on my side!
Lina Chen –
My Nitrofurantoin order went through without a hitch. No complaints about the product. No damage anywhere, the packaging did its job. Besides that, for the price, I could not ask for more. Would not hesitate to use this site again.
Neel Xu –
This was my second order from the site. The item looked exactly like the listing. Another good thing: the packaging was neat and secure. Good service, will reorder when I need to.
Sanjay Yang –
My order went through without any problems. Nothing was broken or leaking and the box was in good shape. The quality looked good to me. I paid less for Nitrofurantoin here than I have elsewhere.
Lucas Moore –
I just received my order and wanted to leave a quick note. Everything I received was exactly what I ordered. Tracking worked well and the delivery went exactly as planned. Nothing negative to say, it was a good one.
Aditya King –
The whole ordering process felt easy and well organised. The right item came, and the label matched my order. Overall, a smooth and simple experience.
Faisal Le –
Wanted to share my experience with this order. Good value for the money. I was not left waiting long, the delivery was quick. The team kept me updated on the status of my Nitrofurantoin order. Happy with the experience overall.
Anna Thomas –
I got the correct item the first time, with no mix-ups. Someone from the team followed up to make sure all was fine. Will come back to this site when I need Nitrofurantoin again.
Sophie Popov –
I used this site for my latest order and had no problems. The customer team was respectful and answered everything I asked. Everything with my Nitrofurantoin was in order when I opened the box. No problems at all, so I am pleased.
Elizabeth Chen –
The quantity was right and everything was accounted for. The box was sturdy and the contents were well protected. I am satisfied and will come back for my next order.
Dylan Roberts –
Writing this after my latest order from the site. I had no issues with what I received. The Nitrofurantoin I ordered came in a reasonable amount of time. Thank you, I will be ordering again.
Faisal Jung –
I decided to try this site and it turned out well. The team kept me updated on my order status. Honestly, the site is clean and easy to move around. It arrived on time, just as I expected.