Fosfomycin

Fosfomycin
4.86 ratingsReviews
Generic:
Fosfomycin
Indications:
urinary tract infections
Analogs:
Monurol Nitrofurantoin Pivmecillinam Trimethoprim Co Trimoxazole Cefalexin Ciprofloxacin Cefuroxime Levofloxacin Macrobid Norfloxacin
In stock: 17 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Fosfomycin 3 g

Quantity Price per sachet You save Total price
1 A$69.92 - A$69.92
2 A$60.80 A$18.24 A$121.60
3 A$57.76 A$36.48 A$173.28
4 A$56.62 A$53.20 A$226.48
5 A$55.94 A$69.92 A$279.68
6 A$55.23 A$88.16 A$331.36
7 A$54.72 A$106.40 A$383.04
8 A$54.91 A$120.08 A$439.28
9 A$54.21 A$141.36 A$487.92
10 A$54.26 A$156.56 A$542.64

Manufacturers

Zambon S.p.A.

Payment & Delivery

Package Example

Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.

Sized like a regular personal letter (approximately 24x11x0.7 cm), with no indication of what is inside.

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Back View
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Delivery Times
Delivery MethodEstimated delivery
Express Free for orders over A$456.00Estimated delivery to Australia: 4-7 days
Standard Free for orders over A$304.00Estimated delivery to Australia: 14-21 days
EMSAustralia Post
Payment Methods
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Discount Coupons

  • Australia Day - 26 January 2026 10% AUSDAY10
  • Labour Day - 2 March 2026 6% LABOUR6
  • ANZAC Day - 25 April 2026 8% ANZAC8
  • King's Birthday - 8 June 2026 7% KING7
  • Boxing Day - 26 December 2026 12% BOXING12

Brand Names

Also known as (by country):
CountryBrand Names
Australia
Monurol

FAQ

Fosfomycin 3 g sachets are Schedule 4 Prescription Only Medicines when supplied by local Australian pharmacies, so a prescription is required there. Our store policy allows you to order fosfomycin without a prescription and have it sent by mail.

For uncomplicated cystitis, fosfomycin 3 g is commonly prescribed as one sachet taken as a single dose, so there is no course to stop partway through. If a clinician has prescribed a different schedule, follow that schedule rather than skipping or adding sachets yourself.

Urinary symptoms should begin to settle over the next few days after treatment. If they do not improve, worsen, or return, seek medical reassessment rather than taking an extra sachet; fever, flank pain, vomiting or feeling very unwell need prompt assessment.

Yes. Granules for oral solution in sachets can normally travel by mail when kept dry and protected from damage in suitable packaging. On arrival, check that the sachets are intact and dry, then store them at 25°C; brief excursions from 15°C to 30°C are permitted.

During pregnancy, fosfomycin should be used only when clearly necessary after an individual benefit-risk assessment, as pregnancy exposure data are limited. Fosfomycin passes into breast milk in low amounts, but breastfeeding use should also be discussed with the prescriber or pharmacist; an infant can be monitored for diarrhoea or oral thrush.

Empty the entire contents of one sachet into a glass of water, stir until dissolved and drink straight away. For acute uncomplicated cystitis, the usual adult regimen is one 3 g sachet as a single oral dose, preferably on an empty stomach and after emptying the bladder, often before bedtime.

Description

Note: Images in the description are provided for informational purposes and may differ from the actual appearance of the product. Please refer to the product name, strength, active ingredients, and dosage form.

Fosfomycin 3 g Sachet (Granules for Oral Solution)

Fosfomycin (fosfomycin trometamol) is a single-dose oral antibiotic supplied as granules for oral solution. In Australian prescribing information, it is indicated for the treatment of acute uncomplicated lower urinary tract infection (acute cystitis) in women caused by susceptible strains of Escherichia coli and Enterococcus faecalis. It is not indicated for the treatment of pyelonephritis (kidney infection) or perinephric abscess.

Fosfomycin

Dosage and directions

Adults (women 18 years and over): one sachet (3 g) taken as a single dose. It can be taken with or without food.

How to take: Empty the entire contents of the sachet into 1/2 cup of water and stir to dissolve. Do not use hot water. Take it straight away after dissolving. Do not take it dry.

Your symptoms should improve within about 2 to 3 days. If they do not, contact your healthcare provider.

Precautions

  • Do not use more than one single dose to treat one episode of acute cystitis. Repeated daily doses did not improve outcomes and increased side effects.
  • Antibiotic-associated diarrhoea: diarrhoea can happen with antibiotics. Get medical advice straight away if you develop watery or bloody stools, with or without stomach cramps and fever, even up to 2 months after taking the dose.
  • Pregnancy: use during pregnancy only if clearly needed. Breastfeeding: it is not known whether fosfomycin tromethamine passes into human milk; discuss feeding options with your Australian healthcare provider.
  • Paediatrics: safety and effectiveness in children 12 years and under have not been established.

Contraindications

Do not use in patients with known hypersensitivity to fosfomycin.

Drug interactions

  • Metoclopramide (and other drugs that increase gastrointestinal motility) may lower serum concentrations and urinary excretion of fosfomycin.
  • Cimetidine does not affect fosfomycin pharmacokinetics when given together with it.

Possible side effects

In clinical studies, the most common drug-related side effects (>1%) were diarrhoea, vaginitis, nausea, headache, dizziness, asthenia, and dyspepsia. Other events reported in clinical trials included rhinitis, back pain, dysmenorrhoea, pharyngitis, abdominal pain, rash, and temporary changes in lab results.

Rare serious adverse events have been reported in post-marketing experience (mostly outside the United States), including angioedema, aplastic anaemia, asthma exacerbation, cholestatic jaundice, hepatic necrosis, and toxic megacolon; during post-marketing surveillance, anaphylaxis and hearing loss have also occurred.

Fosfomycin

Missed dose

This product is taken as a single dose. If you forget to take it, take it as soon as you remember on the same day. Do not take an extra sachet to make up for a missed dose; contact your Australian prescriber for advice.

Overdose

Events observed in patients who have taken too much fosfomycin include vestibular loss, impaired hearing, metallic taste, and a general decline in taste perception. If an overdose happens, treatment should be symptomatic and supportive. Seek urgent medical help in Australia if an overdose is suspected.

Storage

Store at 25°C (77°F); excursions permitted to 15-30°C (59-86°F). Keep out of reach of children.

Medically reviewed by
Donna Brettler
Donna Brettler
BPharm, MPH - Pharmacologist and medical writer
Updated 11 August 2026

Customer questions

Asked by Claire J, Mackay, Australia

My parcel arrived in Mackay after a very hot day. What should I check before I use the fosfomycin sachets?

Answered by Support team

Check the outer pack and each sachet for damage, moisture, leakage or clumped granules, and review the storage information on the pack. Fosfomycin should be stored at 25°C, with permitted excursions from 15°C to 30°C.

Asked by Max R, Rockhampton, Australia

My fosfomycin package arrived in Rockhampton and one sachet looks torn at the edge. Can I still use it?

Answered by Support team

No. Do not use a sachet with a torn seal or any package that appears damaged until the discrepancy has been checked. Keep the packaging and compare the product name, active ingredient, strength, lot number and expiry date when reporting the issue.

Asked by Emma B, Canberra, Australia

I drive between appointments for work. Is it alright to drive after taking a fosfomycin sachet?

Answered by Support team
Medical reviewed by Donna Brettler

You can drive if you feel well, but fosfomycin can cause dizziness in some people. Avoid driving or operating machinery if you feel dizzy or otherwise unwell after taking it.

Product specifications

Active ingredientFosfomycin
Drug classAntibiotic
Dosage formGranules for oral solution
Available strengths3 g
RouteOral
StorageStore at 25°C; excursions permitted from 15°C to 30°C. Keep the sachet dry until use.
ATC codeJ01XX01

Regulatory information

Approval statusFosfomycin is registered and approved for human medicinal use in Australia.
Prescription classificationGranules for oral solution containing fosfomycin are scheduled as Prescription Only Medicine (Schedule 4) and cannot be dispensed without a valid Australian prescription.

More information

Pharmaceutical Benefits Scheme: fosfomycinSearch PBS listings and related information for fosfomycin.pbs.gov.auTherapeutic Goods Administration: fosfomycinSearch the Australian regulator's records for information related to fosfomycin medicines.tga.gov.auPubMed: fosfomycin researchSearch biomedical literature and research abstracts indexed by the US National Library of Medicine.pubmed.ncbi.nlm.nih.gov

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