Please fully read the Patient Information Leaflet that comes with the medication before starting treatment.
This will contain more comprehensive information.
How to take Nitrofurantoin
It should be taken at meal times with food or milk, to help avoid stomach upset and to help improve absorption.
Remember to finish the course as prescribed.
Nitrofurantoin may darken the colour of your urine. This is nothing to worry about.
Driving and Using Machines
Nitrofurantoin may cause dizziness and drowsiness. If you are affected by this, then you should not drive or operate machinery until the symptoms settle.
All medications can cause allergic reactions, however, serious allergic reactions are rare.
Please note that i-GP DOES NOT TREAT Medical Emergencies.
If you develop any sudden onset of the following then you must STOP the medication and seek urgent medical advice (from your GP, Out of Hours Service, Urgent care centre or NHS 111) or call an ambulance if the symptoms are severe:-
- Difficulty in Breathing
- Swelling of the eyelids, face or lips
- A rash particularly if affecting your entire body
Possible Side Effects
All medications have the potential to cause side effects, but not everyone experiences them. Most of the possible side effects to Nitrofurantoin are mild and usually disappear once you stop taking them.
- Feeling sick (nausea), loss of appetite and headache.
- Dizziness, drowsiness
- Blood cells have been affected in some patients. This may result in bruising, delayed clotting of the blood, sore throat, fever, anaemia and a susceptibility to colds or persistent cold
- Skin rashes: appear as flaking skin, a red rash or fever accompanied by rapid heart rate and severe rash with blistering. Other reactions may include inflammation of salivary glands (causing facial pains), inflammation of the pancreas gland (causing severe abdominal pain) and joint pains
- Short-term hair loss
- Urinary infections by germs that are not sensitive to Nitrofurantoin Tablets.
If you experience any of the following side effects, stop taking Nitrofurantoin Tablets and seek medical advice.
- Your lungs may react to Nitrofurantoin Tablets. This may develop quickly, within a week of starting treatment or very slowly, especially in elderly patients. This may produce fever, chills, cough and shortness of breath.
- Jaundice (inflammation of the liver causing yellowing of the skin or whites of the eyes).
- The nerves outside of the spinal cord may be affected causing changes to the sense of feeling and the use of muscles.
- Raised pressure in the skull (causing severe headaches).