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Patient Information Leaflet
253 mini

Hiprex 1g tablets
Methenamine hippurate
Read all of this leaflet carefully before you start taking this medicine.
• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor or pharmacist.
•  his medicine has been prescribed for you. Do not pass it on to others. It may harm
them, even if their symptoms are the same as yours.
In this leaflet:
1. What Hiprex is for
2. Before you take Hiprex
3. How to take Hiprex

4. Possible side effects
5. How to store Hiprex
6. Further information.

1. What Hiprex is for
Hiprex belongs to a group of medicines called anti-bacterials. These work by killing many
different types of bacteria which cause infections.
Hiprex is used to treat infections of the urinary tract and stop them from coming back.The
urinary tract is a collective name for the parts of the body that produce, store and transport
urine. These include the kidney, bladder and tubes called the ureter and urethra. It is also
used to avoid urinary tract infections in patients with catheters from their bladders (a tube
that helps with incontinence) and in people undergoing certain medical procedures.

2. Before you take Hiprex
Do not use Hiprex if:
• You are allergic to methenamine hippurate (which is the active ingredient in Hiprex tablets)
• You are allergic to any of the other ingredients of Hiprex (listed in section 6)
•  ou are taking antibiotic medicines called sulphonamides. These can damage your
kidneys when taken at the same time as Hiprex
• You are severely dehydrated
• You have serious problems with your kidneys
• You have problems with your liver
• You have gout
• You have a condition called metabolic acidosis (a chemical imbalance in the blood).
If any of the above applies to you, talk to your doctor or pharmacist.
Check with your doctor before taking Hiprex if:
• You have any kinds of problems with your kidneys.
Tell your doctor if you are taking any of the following medicines:
•  edicines to make your urine less acidic such as potassium citrate and acetaolamide.
These can stop Hiprex working properly
• Any other medicines, including medicines obtained without a prescription.
Pregnancy and breast-feeding
If you are pregnant, trying to become pregnant or breast feeding, ask your doctor or
­ harmacist for advice before taking Hiprex.

3. How to take Hiprex
Always take Hiprex exactly as your doctor has told you. You should check with your doctor
or pharmacist if you are not sure.
Your doctor will choose the dose that is right for you. Your dose will be shown
clearly on the label that your pharmacist puts on your medicine. If it does not, or
you are not sure, ask your doctor or pharmacist.

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The usual dose is one tablet twice a day.
If you have a catheter your doctor may increase your dose to one tablet three times a day.
Children (6 - 12 years old)
The usual dose is half a tablet (500 mg) twice a day.
Remember: The tablets can be broken in half. If you find it particularly difficult to swallow
them, the tablets may be crushed and taken with a drink of milk or fruit juice.
If you take more Hiprex than you should
If you accidentally take more Hiprex than you should you might be sick or see blood in your
urine. Drink plenty of water and immediately go to the nearest hospital casualty department
or your doctor. Your doctor may give you another medicine to stop you being sick.
If you forget to take Hiprex
Do not take a double dose to make up for a missed dose. Simply take your next dose as
If you stop taking Hiprex
Your doctor will tell you how long to take your medicine for. Do not stop taking Hiprex
­ ithout first talking to your doctor.
If you have further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects
Like all medicines, Hiprex can cause side effects, although not everybody gets them.
• Rashes
• Itching
• Stomach irritation
• Bladder irritation usually seen as a burning sensation and pain on urinating.
If any of the side effects gets serious, or if you notice any side effects not listed in this
leaflet, please tell your doctor or pharmacist.

5. How to store Hiprex
Keep out of the reach and sight of children.
Do not use Hiprex after the expiry date which is stated on the bottle. The expiry date refers
to the last day of that month.
Store Hiprex below 30 °C, with the bottle lid tightly closed in its original carton.
Medicines should not be disposed of via wastewater or household waste. Return any
­ edicine you no longer need to your pharmacist.

6. Further information
What Hiprex contains
The active substance is methenamine hippurate. Each tablet contains 1 gram.
The other ingredients are magnesium stearate (E572), povidone and colloidal anhydrous
­ ilica.
What Hiprex looks like
Each tablet is white, oblong shaped with breakline and is marked “HX” on one side and
“3M” on the other. Hiprex comes in a glass bottle which contains 60 tablets.
Marketing Authorisation Holder:
Meda Pharmaceuticals Ltd, Skyway House, Parsonage Road, Takeley, Bishop’s Stortford,
CM22 6PU, United Kingdom.
3M Health Care Ltd, Loughborough, Leicestershire, LE11 1EP, United Kingdom.
This leaflet was last revised on June 2013
If this leaflet is difficult to see or read and you would like it in a

different format, please contact Meda Pharmaceuticals, Skyway House,
Parsonage Road, Takeley, Bishop’s Stortford, CM22 6PU, United

6204 2119 4
Hiprex is a trademark of MEDA AB.
The Triangle Logo on the packaging is a trademark
of 3M and is used under license.

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Studio Oberländer GmbH · Rubensstr.  33 · 60596 Frankfurt a. M. · Germany
Phone: +49 69 631520-85  ·  Fax: - 87  ·  E-Mail:

Specification Box: Leaflet
Manufacturer: Meda Pharma GmbH & Co. KG

Colours used:

Product: Hiprex


1g tablets

30% Tint of Black

Meda-No.: 56UK1813110-00


6204 2119 4

Drawing Ref.: PE00256

Laetus-Code: 253

United Kingdom UK

Language: english
Pack Size:

127 x 191 mm

Correction: 3.

Font Size:

8 pt / 8,5 pt


05. 07. 2013

253 std

253 mini
= 66%

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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.