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Monuril sachets 3 g – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
3 g
Contains active substance:
ATC code:
Similar medicines:

Patient leaflet - Monuril sachets 3 g

1. What Monuril is and what it is used for

Monuril contains the active substance fosfomycin (as fosfomycin trometamol). It is an antibiotic that works by killing bacteria which can cause infections.

Monuril is used to treat uncomplicated infection of the bladder in women and female adolescents.

Monuril is used as antibiotic prophylaxis for transrectal prostate biopsy in adult man.

2. What you need to know before you take Monuril

Do not take Monuril if you:

  • are allergic to fosfomycin or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Talk to your doctor, pharmacist or nurse before using Monuril if you suffer from one of the following disorders:

  • persistent infections of the bladder,
  • previously had diarrhea after taking any other antibiotics.

Conditions you need to look out for

Monuril can cause serious side effects. These include allergic reactions and an inflammation of the large intestine. You must look out for certain symptoms while you are taking this medicine, to reduce the risk of any problems. See “Serious side effects” in Section 4.

Children and adolescents

Do not give this medicine to children less than 12 years of age, as its safety and efficacy have not been established in this age group.

Other medicines and Monuril

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines, including medicines obtained without a prescription.

This is especially important if you are taking: - metoclopramide or other medicinal products that increase the movement of food through the stomach and intestines, because they may

reduce the uptake of fosfomycin by your body, - anticoagulants, as their ability to prevent your blood from clotting might be altered by fosfomycin and other antibiotics.

Monuril with food

Food may delay the absorption of fosfomycin. Therefore, this medicinal product should be taken on an empty stomach (2-3 hours before or 2-3 hours after a meal).

Pregnancy, breast-feeding and fertility

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

If you are pregnant your doctor will only give you this medicine when it is clearly needed.

Breast-feeding mothers can take a single oral dose of this medicine.

Driving and using machines

You may experience side effects, such as dizziness, which may affect your ability to drive or use machines.

Monuril contains

Sodium

This medicine contains less than 1 mmol sodium (23 mg) per sachet that is to say essentially ‘sodium-free’.

Sucrose

If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicinal product.

Sulphites

May rarely cause severe hypersensitivity reactions and bronchospasm.

3. How to take Monuril

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

In case of treatment of uncomplicated infection of the bladder, in women and female adolescents the recommended dose is 1 sachet of Monuril (3 g Fosfomycin).

When used as antibiotic prophylaxis for transrectal prostate biopsy the recommended dose is 1 sachet of Monuril (3 g fosfomycin) 3 hours prior to the procedure and 1 sachet of Monuril (3 g fosfomycin) 24 hours after the procedure. granules for oral solution

Fosfomycin

PACKAGE LEAFLET: INFORMATION FOR THE USER

Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again. - If you have any further questions, ask your doctor or pharmacist. - This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours. - If you get any side effects talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

Property of

Zambon S.p.A

Via Lillo del Duca 10 20091 Bresso / Milano

PRODOTTO / BRAND:

IS MONURIL 3G BST UK

LATO BIANCA / FRONT SIDE

LATO STAMPA BIANCA/VOLTA (SIDE PRINT FRONT/REAR):

REV MOCKUP APPROVATO - DATA: NA
CODICE / ITEM: H02H100ED. / VERSION N: E04.0122DATA / DATE: 20/01/2022CONFORME AL MASTER LAYOUT - NOTE: IS 506 C C -A

FONT/CORPO MIN./INTERLINEA (FONT/MIN. SIZE/SPACING): HELVETICA NEUE

Corpo 8pt - Interlinea 9pt.

ISTRUZIONI FORNITORE / SUPPLIER INSTRUCTION: N/A

DIMENSIONI / SIZE: 135 x 280 (35) mmFORM./TECH.CODE/MASTER LAYOUT: IS 506 C C -ACOLORI / COLORS NO: 2BRAILLE: N/A
COD. CLIENTE / CUSTOMER CODE: N/AEDGE CODE: B-D-R

N/A N/A N/A N/A

N/A

N/A

P 390 U BLACK U

STABILIMENTO / PLANT: CADEMPINOPACKAGING LINE: Monuril

CHANGE DESCRIPTION:

Modifica testi / Edit texts

The design and the text are Zambon SpA or a Company member of Zambon SpA property - ED 1.0112 Scale 1:1

Use in patients with renal impairment

This medicine should not be used in patients with severe renal impairment (creatinin clearance < 10 ml/min).

Use in children and adolescents

This medicine should not be used in children less than 12 years of age.

Method of administration

For oral use.

Take this medicine by mouth, on an empty stomach (2-3 hours before or 2-3 hours after a meal), preferably before going to bed after emptying the bladder.

Dissolve the content of one sachet in a glass of water and drink immediately.

If you take more Monuril than you should

If you accidentally take more than your prescribed dose, contact your doctor or pharmacist.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Serious side effects

While taking Monuril, if you develop any of the following symptoms you should stop taking the medicine and contact your doctor immediately:

  • anaphylactic shock, a life threatening type of allergic reaction (the frequency is unknown). Symptoms include a sudden onset of rash, itching or hives on the skin and or shortness of breath, wheezing or difficulty in breathing, - swelling of the face, lips, tongue or throat with breathing difficulties (angioedema) (the frequency is unknown),
  • moderate to severe diarrhea, abdominal cramps, bloody stools and/or fever may mean that you have an infection of the large intestine (antibiotic-associated colitis) (the frequency is unknown). Do not take medicines against diarrhea that inhibit the bowel movements (antiperistaltics).

Other side effects

Common (may affect up to 1 in 10 people):

  • headache
  • dizziness
  • diarrhea
  • nausea
  • indigestion
  • abdominal pain
  • infection of the female genital organs with symptoms like inflammation, irritation, itching (vulvovaginitis).

Uncommon (may affect up to 1 in 100 people):

  • vomiting
  • rash
  • urticaria
  • itching

Not known (frequency cannot be estimated from the available data):

  • allergic reactions.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet.

You can also report side effects directly via the national reporting system website:

www.mhra.gov.uk/yellowcard.

By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Monuril

Keep this medicine out of the sight and reach of children.

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. Store away from direct sunlight. 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 protect the environment.

6. Contents of the pack and other information

What Monuril contains

  • The active substance is fosfomycin. Each sachet contains 5.631 g of fosfomycin trometamol, equivalent to 3 g of fosfomycin - the other ingredients are mandarin flavour, orange flavour, saccharin, sucrose (see section 2 for information on sucrose).

What Monuril looks like and contents of the pack

White granules for oral solution in a single dose sachet.

Sachets are four layers laminate of:

paper/polyethylene/aluminium/polyethylene. Monuril is available in packs containing: 1 sachet of 8 g of granules (3 g fosfomycin) 2 sachets of 8 g of granules (3 g fosfomycin) 5 sachets of 8 g of granules (3 g fosfomycin). Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder:

Zambon S.p.A.

Via Lillo del Duca, 10

20091 Bresso (Milan) – Italy

Tel: +39 02 665 241

Fax: +39 02 665 01 492

Manufacturer:

Zambon S.p.A.

Via della Chimica, 9

36100 Vicenza – Italy

Distributor

Zambon UK Ltd.

Tel: +44 (0) 800 0288 942

This leaflet was last revised in February 2022.

H02H100 E04.0122 IS 506 C C-A (cp 8/9)

B B

D D

R R

Property of

Zambon S.p.A

Via Lillo del Duca 10 20091 Bresso / Milano

PRODOTTO / BRAND:

IS MONURIL 3G BST UK

LATO STAMPA BIANCA/VOLTA (SIDE PRINT FRONT/REAR):
REV MOCKUP APPROVATO - DATA: NA
CODICE / ITEM: H02H100ED. / VERSION N: E04.0122DATA / DATE: 20/01/2022CONFORME AL MASTER LAYOUT - NOTE: IS 506 C C -A

FONT/CORPO MIN./INTERLINEA (FONT/MIN. SIZE/SPACING): HELVETICA NEUE

Corpo 8pt - Interlinea 9pt.

ISTRUZIONI FORNITORE / SUPPLIER INSTRUCTION: N/A

DIMENSIONI / SIZE: 135 x 280 (35) mmFORM./TECH.CODE/MASTER LAYOUT: IS 506 C C -ACOLORI / COLORS NO: 2BRAILLE: N/A
COD. CLIENTE / CUSTOMER CODE: N/AEDGE CODE: B-D-R

N/A N/A N/A N/A

N/A

N/A

P 390 U BLACK U

STABILIMENTO / PLANT: CADEMPINOPACKAGING LINE: Monuril

CHANGE DESCRIPTION:

Modifica testi / Edit texts

The design and the text are Zambon SpA or a Company member of Zambon SpA property - ED 1.0112 Scale 1:1

LATO VOLTA / BACK SIDE

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 31654/0006

Last revision stated in the text: February 2022 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Monuril sachets 3 g

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Fosfomycin
Strength 3 g
Pharmaceutical form Granules for oral solution
How is it taken Oral
Excipients Mandarin flavour, Orange flavour, Saccharin, Sucrose
Pack sizes 1 sachet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Drug group (ATC) Antibacterials for systemic use – other antibacterials
  1. J Antiinfectives for systemic use
    1. J01 Antibacterials for systemic use
      1. J01X Other antibacterials
        1. J01XX Other antibacterials
          1. J01XX01 fosfomycin
Marketing authorisation PL 31654/0006 (first authorised 18 March 1994)
Marketing authorisation holder ZAMBON S.p.A.
Codes GTIN 5060045110008 · BNF 05010700

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.