MediHealth Direct

Nitrofurantoin 50mg

Prescription-only medicine · General · UK online pharmacy

Nitrofurantoin is a widely used antibiotic prescribed to treat urinary tract infections (UTIs), particularly cystitis. It works by targeting bacteria that cause infection, preventing their growth and aiding your immune system in fighting them off.

Nitrofurantoin 50mg prices by dose and pack size

StrengthPack sizePrice
50mg12 tablets£11.24

Prices correct as of 2026-08-21. The exact dose is confirmed during the clinical assessment.

All strengths and pack sizes are listed on the Nitrofurantoin page.

Nitrofurantoin: Effective Antibiotic for Treating UTIs

What is Nitrofurantoin?

Nitrofurantoin is a widely used antibiotic prescribed to treat urinary tract infections (UTIs), particularly cystitis. It works by targeting bacteria that cause infection, preventing their growth and aiding your immune system in fighting them off.

This antibiotic is available as a generic drug or under branded names, such as MacroBID, in 100mg modified-release (MR) capsules. Medihealth Direct offers Nitrofurantoin with the same active ingredient and efficacy as branded options.

How Does Nitrofurantoin Work?

Nitrofurantoin is absorbed into the body and concentrated in the urine, where it acts to combat the bacteria-causing infection.

Key Actions:

  1. Damages Bacterial DNA – Prevents bacteria from duplicating.
  2. Stops Protein Production – Limits the bacteria’s ability to grow and spread.

To effectively clear the infection, it is crucial to complete the prescribed course, even if symptoms improve early.

How to Take Nitrofurantoin

General Dosage Instructions

Dosage for Women

If symptoms persist beyond 3 days, continue for up to 7 days. Seek medical advice if symptoms persist beyond 7 days.

Dosage for Men

Nitrofurantoin is not available online for men due to the need for in-person diagnosis. Men should consult their GP for UTI treatment.

How Long Does Nitrofurantoin Take to Work?

For most patients:

If symptoms persist, consult your healthcare professional.

Possible Side Effects of Nitrofurantoin

Common Side Effects

Rare but Serious Side Effects

Seek immediate medical help if you experience:

Precautions Before Taking Nitrofurantoin

Consult your healthcare professional before starting Nitrofurantoin, especially if you:

Avoid alcohol during treatment and drink plenty of water to help flush bacteria from your urinary tract.

Can I Buy Nitrofurantoin Online from Medihealth Direct?

Mizollen is not suitable for individuals with:

Pregnant or breastfeeding women should consult a healthcare professional before using Mizollen.

Nitrofurantoin FAQs

What is Nitrofurantoin used for?

Nitrofurantoin is used to treat UTIs, bladder infections, and kidney infections.

Can men use Nitrofurantoin?

Men should consult their healthcare professional for in-person diagnosis and prescription.

Is Nitrofurantoin safe during pregnancy?

Yes, but only during the first trimester. Avoid Nitrofurantoin in the later stages of pregnancy.

Can I drink alcohol while taking Nitrofurantoin?

Yes, but avoid excessive drinking, as alcohol can worsen side effects like nausea.

Does Nitrofurantoin treat bacterial vaginosis or chlamydia?

No, Nitrofurantoin is not effective for these conditions. Alternative antibiotics, such as Metronidazole, are prescribed.

How long do side effects last?

Most side effects subside within a few days. If symptoms persist, consult your healthcare professional.

How does the online consultation for Nitrofurantoin work?

  1. Complete a confidential online health questionnaire.
  2. A GPhC-registered pharmacist reviews your answers and confirms whether the treatment is clinically appropriate.
  3. If approved, your medication is dispensed by the pharmacy and delivered in discreet packaging by tracked UK delivery.

See how the service works or browse all treatments.