Mesalazine
Mesalazine, the active substance of Pentasa, acts locally as an anti-inflammatory agent on the diseased wall of the sigmoid colon and rectum.
Pentasa is used to treat ulcerative colitis.
BEFORE STARTING MESALAZINE TREATMENT, THE PATIENT SHOULD INFORM THEIR DOCTOR:
if the patient is allergic to mesalazine or any of the other ingredients of this medicine (listed in section 6),
if the patient is allergic to salicylates, such as aspirin,
if the patient has severe liver or kidney dysfunction,
if the patient has stomach or duodenal ulcer disease,
if the patient has haemorrhagic diathesis.
Before starting Pentasa treatment, the patient should discuss it with their doctor.
Care should be taken:
if the patient is allergic to sulfasalazine,
if there are liver or kidney function disorders,
if the patient is being treated with medicines that may affect kidney function,
if the patient is being treated with azathioprine (an immunosuppressive agent), 6-mercaptopurine (an antineoplastic and immunosuppressive agent) or tioguanine (an antineoplastic agent),
if there are lung disorders, especially bronchial asthma,
if the patient experiences severe or recurrent headache, vision disturbances or ringing or buzzing in the ears, they should contact their doctor immediately.
Mesalazine treatment may lead to the formation of kidney stones. Symptoms may include pain in the sides of the abdomen and haematuria. During mesalazine treatment, the patient should drink sufficient fluids.
Severe skin reactions, including drug reaction with eosinophilia and systemic symptoms (DRESS), Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), have been reported with mesalazine treatment. The patient should stop using mesalazine and seek medical attention immediately if they experience any symptoms of these severe skin reactions, listed in section 4.
Rarely, mesalazine has been reported to cause cardiac hypersensitivity reactions (myocarditis and pericarditis).
Very rarely, serious blood disorders have been reported.
If acute intolerance symptoms occur, such as colicky abdominal pain, acute abdominal pain, fever, severe headache or rash, the patient should stop treatment and consult their doctor immediately.
Usually, before and during treatment, the doctor will order blood and urine tests to assess liver, kidney or blood function.
Mesalazine may cause reddish-brown discoloration of urine after contact with sodium hypochlorite bleach in toilet water. This is a chemical reaction between mesalazine and bleach and is harmless.
Experience with the use of Pentasa in children is limited and clinical data are restricted.
The patient should tell their doctor about all medicines they are currently taking or have recently taken, as well as any medicines they plan to take. In particular, this concerns medicines such as:
sulfasalazine, azathioprine, 6-mercaptopurine or tioguanine, warfarin.
If the patient is pregnant or breastfeeding, thinks they may be pregnant or plans to have a child, they should consult their doctor before using this medicine.
Mesalazine passes through the placenta.
Mesalazine passes into breast milk.
No effect of Pentasa on the ability to drive and use machines has been observed.
This medicine should always be used as directed by the doctor. In case of doubts, the patient should consult their doctor.
The recommended dose is:
Adults
1 g (one suppository) in the evening before bedtime.
In elderly patients, there is no need to change the dosage.
The medicine is administered rectally.
Before using the suppository, the patient should empty their bowels.
Before administration, the bottle with the suspension should be warmed to about 37°C.
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The medicine should be used immediately after opening the foil pouch.
The patient should protect their clothing from staining with Pentasa, as it may cause discoloration of the material. In case of accidental staining, the material should be washed immediately.
In case of overdose, symptomatic treatment in a hospital and monitoring of kidney function are recommended.
Like all medicines, Pentasa can cause side effects, although not everybody gets them.
The patient should stop using mesalazine and seek medical attention immediately if they experience any of the following symptoms:
Severe side effects with unknown frequency (cannot be estimated from the available data)
if the patient experiences severe or recurrent headache, vision disturbances or ringing or buzzing in the ears. These may be symptoms of increased intracranial pressure (idiopathic intracranial hypertension).
The following side effectsare common(may affect 1 to 10 in 100 patients):
The following side effectsare rare(may affect 1 to 10 in 10,000 patients):
The following side effectsare very rare(may affect less than 1 in 10,000 patients):
Unknown frequency(cannot be estimated from the available data)
If the patient experiences any side effects, including any side effects not listed in the leaflet, they should tell their doctor. Side effects can be reported directly to the Department of Drug Safety Monitoring of the Office for Registration of Medicinal Products, Medical Devices and Biocidal Products:
Aleje Jerozolimskie 181C, 02-222 Warsaw,
Phone: +48 22 49 21 301
Fax: +48 22 49 21 309
website: https://smz.ezdrowie.gov.pl .
Side effects can also be reported to the marketing authorisation holder.
Reporting side effects will help to gather more information on the safety of the medicine.
Keep out of the sight and reach of children.
Do not store above 25°C. Store in the original packaging to protect from light.
Do not use this medicine after the expiry date stated on the packaging after the EXP label.
The expiry date refers to the last day of the month stated.
Medicines should not be disposed of via wastewater or household waste. The patient should ask their pharmacist how to dispose of medicines that are no longer needed. This will help protect the environment.
The active substance of Pentasa is mesalazine. 100 ml of suspension contains 1 g of mesalazine.
The other ingredients are: disodium edetate, sodium metabisulphite, sodium acetate, hydrochloric acid, purified water
Pentasa is available as a rectal suspension.
The suspension is white to slightly yellow in colour.
The packaging contains 7 bottles of 100 ml suspension
Ferring GmbH
Wittland 11
D-24109 Kiel
Germany
Ferring-Léčiva a.s.
K Rybniku 475
252 42 Jesenice near Prague
Czech Republic
To obtain more detailed information, the patient should contact the representative of the marketing authorisation holder.
Ferring Pharmaceuticals Poland Sp. z o.o.
Szamocka 8
01-748 Warsaw
Phone: +48 22 246 06 80, Fax: +48 22 246 06 81
Date of last revision of the leaflet:January 2025
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