Nitrofurantoin - Macrobid

  • Type


  • Consumption


  • Availability

    In Stock

  • 3-Day Antibiotic Course
  • Antibiotic To Treat Urinary Tract, Kidney And Bladder Infections
  • Active Ingredient: MacroBID
  • Buy With Confidence From UK Registered Pharmacy

Nitrofurantoin - Macrobid

From £29.99

Medication features

Nitrofurantoin (the active ingredient) of Macrobid is an antibiotic, used to prevent and treat infections of the bladder, kidney and other parts of the urinary tract.

Please note: This page is only to be used as a reference of our price for this medication. If you are approved you will be offered treatment for you and the prescriber to jointly consider. However, the final decision will always be the prescriber's.
NOTE: After selecting this product, you will need to complete a short assessment, so we can make sure this medication is suitable for you.

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  • Overview

    Nitrofurantoin or Macrobid is a prescription medicine which is used to treat and prevent infections of the bladder (cystitis), kidney and other parts of the urinary tract (UTIs).

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  • How does Nitrofurantoin work?

    When Nitrofurantoin is taken, the body filters it out of your blood and into your urine. This is especially helpful if you have a urinary tract infection because it centralizes around the site of infection. However, this means that Nitrofurantoin won’t do anything for other types of infection.

  • How do I use Nitrofurantoin for infection?

    For uncomplicated urinary tract infection (cystitis) you must take ONE tablet twice daily for 3 days.

    • All tablets to be taken with water, with or without food

    If you forget a pill, take it as soon as you remember unless it is near to your next dose. If this is the case, miss completely and continue to finish the dosage. Never take a double dose to make up for a missed pill.

    Please note that this medicine can discolour bodily fluids such as urine.

  • FAQ

    • What is Cystitis?

      Cystitis is the medical term given to inflammation of the bladder. It is commonly caused by a bacterial infection and known as a Urinary Tract Infection(UTI).

    • What are the symptoms of Cystitis?

      The signs and symptoms of Cystitis include:

      • Persistent urge to pass urine
      • Burning sensation when urinating
      • Discomfort in pelvic area
      • Blood in the urine (hematuria)
      • Passing of cloudy or strong-smelling urine
    • Is Cystitis common?

      Women get cystitis more often than men because their anus (back passage) is closer to their urethra, and their urethra is much shorter, which means bacteria may be able to get into the bladder more easily.

      The urethra is longer in men than women, this makes it harder for bacteria to travel up to the bladder. Men can also get cystitis but this is significantly less common and they must visit their GP to rule out other serious conditions such as urinary obstruction, enlarged prostate or tumours.

    • How can I prevent cystitis?

      If you suffer from cystitis regularly, there are measures you can apply to stop it reoccurring. These included but are not limited to:

      • Stay Hydrated: drink plenty of water
      • Urinate Frequently: if you feel the urge, do not delay passing urine.
      • Wipe from front to back: this is in reference to wiping after a bowel movement. It prevents the bacteria from faeces spreading to the vaginal area.
      • Use Non-Perfumed products: use perfume free or plain feminine products in the genital area. 
      • Pass Urine as soon as possible after sexual intercourse: drinking lots of water helps flush bacteria
      • Gently wash the skin around genital area: do this daily but take care to not use harsh soaps or wash too vigorously in these delicate areas.
    • Is Cystitis contagious?

      Cystitis is a bacterial infection, however it cannot be transmitted like the common cold. Cystitis is not contagious; you do not need to worry about passing it on to others.

    • What is the treatment for Cystitis?

      The treatment for cystitis depends on it's severity.

      For mild infections, you can make the urine less acidic by avoiding carbonated drinks and drinking lots of water. There are also simple sachets such as Cystopurin, Canesten Oasis, Potassium Citrate mixtures.

      For more troublesome infections, the bacterial infection can be treated using antibiotics such as Trimethoprim or Macrobid (Nitrofurantoin). These are both available through our online pharmacy


    • What is the best antibiotic for Cystitis?

      For any bacterial infection, the best antibiotic is dependent on what bacteria is causing the infection. The most common type of bacteria for uncomplicated urinary tract infections is E-Coli.

      In the UK, NICE determine guidelines for prescribing using an evidence-based approach. 

      The antibiotics which are given to treat this bacteria are Trimethoprim or Nitrofurantoin. If your symptoms do not improve after completing a course of these antibiotics, it is imperative that you see your GP to have a urine analysis carried out. 


    • Can you buy treatment over the counter for Cystitis?

      There are sachets containing Sodium Bicarbonate or Potassium Citrate which are available over the counter. These alleviate the symptoms however they simply reduce the acidity of urine and their effectiveness lacks sufficient evidence.


  • Side Effects

    Before taking Nitrofurantoin, you should always first consult your doctor. You should not take Nitrofurantoin if any of the following apply to you:

    • infants under three months of age
    • you have porphyria (blood disorder)
    • you have a disease of the kidneys
    • you are allergic to nitrofurantoin or any of the other ingredients in this medicine
    • you are in the final stages of pregnancy (labour or delivery)
    • you have G6PD (glucose-6-phosphate dehydrogenase) deficiency
    • you are breastfeeding a baby with suspected or known deficiency in an enzyme called G6PD (glucose-6-      phosphate-dehydrogenase)

    Your prescription of Nitrofurantoin may also be affected by a number of other factors, so you should make your doctor aware if any of the following apply:

    • you have false positive results on testing your urine for glucose
    • you lack an enzyme called glucose-6-phosphate-dehydrogenase
    • you are suffering from any illness causing severe weakness
    • you have diabetes
    • you have anaemia or a lack of vitamin B
    • you have any disease of the lungs, liver or nervous system.
    • your urine is dark yellow or brown coloured.

    Like many medications with active ingredients, Nitrofurantoin can affect or be affected by other medicines. Particular medications that you may experience this with include the following:

    • Medicines for infections, known as quinolones
    • anhydrase inhibitors (e.g. acetazolamide)
    • Medicines which slow the passage of food through the stomach
    • Antacids for indigestion (e.g. magnesium trisilicate)
    • Medicines for gout (e.g. probenecid or sulfinpyrazone)
    • Medicines for raised pressure in the eye (glaucoma)
    • Medicines which make the urine less acid
    • Typhoid vaccine

    If you are taking any of the above medications, then you should make your doctor aware so that they can advise whether or not Nitrofurantoin will be the best course of action for you.

    The most common side effects of using Nitrofurantoin include:

    • A variety of skin rashes or reactions
    • Loss of appetite, stomach ache and being sick (vomiting)
    • Feeling sick (nausea) and headache
    • Loose stools
    • Dizziness, drowsiness
    • Short-term hair loss

    If you do experience one or more of these side effects and they persist or worsen, then inform your doctor right away. You should also contact your doctor immediately if you experience any serious side effects, such as sudden wheezing, difficulty breathing, or swelling of the face.

  • Info Leaflet

    Before taking any medicines, 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 or by clicking here.