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Nitrofurantoin 100mg Prolonged Release Capsules x6

From £18.99

Product features

Used as a treatment in bacterial infections of the urinary tract. 

Prevent and treat infections of the bladder and kidney.

One capsule twice a day for 3 days. 


Nitrofurantoin is an antibiotic. It is used to prevent and treat infections of the bladder, kidney and other parts of the urinary tract. Nitrofurantoin works by killing bacteria. It does this by slowing folate synthesis which is required by the bacteria for replication.

Side Effects


Like all medicines, this medicine can cause side effects, although not everybody gets them. Most of them are mild and disappear when you stop taking Nitrofurantoin.

If you experience any of the side effects detailed below or any other side effects, stop taking Nitrofurantoin and consult your doctor.

All medicines can cause allergic reactions although serious allergic reactions are rare. If you notice any sudden wheeziness, difficulty in breathing, swelling of the eyelids, face or lips, rash or itching (especially affecting your whole body) STOP TAKING your medicine and go to a doctor immediately.

Please note that while taking Nitrofurantoin your urine may become coloured dark yellow or brown. This is quite normal and not a reason to stop taking the medicine.

For a full list of side effects, please read the patient information leaflet.

If you get any side effects, talk to your doctor, our Rightdose pharmacists or nurse. This includes any possible side effects not listed in this leaflet. You can help to make medicines safer by reporting any side-effects to the Yellow Card Scheme at www.mhra.gov.uk/yellowcard.

Info Leaflet

Before taking any medication, it is important to read the Patient Information Leaflet. You can find information leaflets for your medicines by typing them into the search bar at medicines.org, or by contacting us.




Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

The recommended dose is: Adults and children over 12 years old: The normal dosage depends on the type of infection you have and instructions should be written on the label provided by the pharmacist. Consult your pharmacist or doctor if these instructions are not clear.

Dosage: ONE capsule TWICE a day for 3 days

Use in children Nitrofurantoin 100mg Prolonged-Release Capsules is not recommended for children under 12 years of age.

Nitrofurantoin 100mg Prolonged-Release Capsules should be taken with food or milk.

Medical Checks: Your doctor will watch carefully for any effects on the liver, lungs, blood or nervous system.

Nitrofurantoin may interfere with the results of some tests for glucose in the urine. Method of administration Capsules should be swallowed whole.

If you take more Nitrofurantoin 100mg Prolonged-Release Capsules than you should: Consult your doctor or pharmacist immediately or go to the emergency department of the nearest hospital. Always take any left over capsules with you, as well as the container and label, so that the medical staff know what you have taken.

If you forget to take Nitrofurantoin 100mg Prolonged-Release Capsules: Do not worry. If you remember later on that day, take that day’s dose as usual. If you miss a whole day’s dose take the normal dose on the next day. Do not take a double dose to make up for a forgotten capsule. If you are not sure ask your doctor or pharmacist.

If you stop taking Nitrofurantoin 100mg Prolonged-Release Capsules: Your doctor will tell you how long to take the treatment. Do not stop earlier than you are told, even if you feel better. If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.


DO NOT TAKE Nitrofurantoin 100mg Prolonged-Release Capsules

• if you are allergic to Nitrofurantoin, other nitrofurans or any of the other ingredients of this medicine (listed in section 6)

• if you have a disease of the kidneys which is severely affecting the way they work (ask your doctor if you are not sure)

• if you are in the final stages of pregnancy (labour or delivery) as there is a risk that it might affect the baby • if you have porphyria (blood disorder)

• if in patients with G6PD (glucose-6-phosphate dehydrogenase) deficiency

• if in infants under three months of age

• if you are breast feeding a baby with suspected or known deficiency in an enzyme called G6PD (glucose-6-phosphate dehydrogenase). Tell your doctor if you are not sure about any of the above. Warnings and precautions Talk to your doctor, pharmacist or nurse before taking Nitrofurantoin 100mg Prolonged-Release Capsules:

• if you have diabetes

• if you are suffering from any illness causing severe weakness Driving and using machines: Nitrofurantoin 100mg Prolonged-Release Capsules may cause dizziness and drowsiness. You should not drive or operate machinery if you are affected this way until such symptoms go away. Nitrofurantoin 100mg Prolonged-Release Capsules contains lactose and sucrose If you have been told by your doctor that you are intolerant to some sugars and have to avoid them, contact your doctor before taking this medicine.

Keep this medicine out of the sight and reach of children.
Do not store above 30°C (aluminium/aluminium). Do not store above 25°C (For
PVC/polyethylene/aclar/aluminium blisters).
Store in the original package to protect from light and moisture.
Do not use this medicine after the expiry date which is stated on the carton after EXP. The expiry date
refers to the last day of that month.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to
throw away medicines you no longer use. These measures will help to protect the environment.



What Nitrofurantoin 100mg Prolonged-Release Capsules contains: The active substance is 100mg nitrofurantoin in each capsule. The other ingredients are talc, corn starch, lactose, carbopol, povidone, sugar and magnesium stearate. The capsule shell contains gelatin, quinoline yellow (E104), titanium dioxide (E171) and FD&C Blue No.2 (E132). The printing ink contains shellac, propylene glycol (E1520), titanium dioxide (E171) black iron oxide (E172), ammonium hydroxide (E527) and simethicone. What Nitrofurantoin 100mg Prolonged-Release Capsules looks like and contents of the pack: Nitrofurantoin 100mg Prolonged-Release Capsules has an opaque blue cap and opaque yellow body and bears the monogram “GS 100”.

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