Patient Information Leaflet
Claversal 1 g Rectal Foam
mesalazine
Read this leaflet carefully before you start using this medicine because it contains important information for you.
Contents of the pack
Claversal contains mesalazine (also known as 5-aminosalicylic acid), which belongs to a group of medicines called intestinal anti-inflammatory agents.
Claversal rectal foam is indicated for the treatment of ulcerative colitis, an inflammatory disease of the intestine.
Do not use Claversal
Warnings and precautions
Talk to your doctor or pharmacist before you start using Claversal
If you experience severe headache or recurrent headache, vision changes, or ringing or buzzing in the ears, contact your doctor immediately.
In case of appearance of any allergic manifestation (e.g., skin rash, itching) or fever during the course of treatment, do not apply more Claversal rectal foam and inform your doctor immediately.
Before and during treatment, your doctor may want to perform regular blood and urine tests to check the functioning of your liver, kidneys, blood, and lungs.
Kidney stones may occur with the use of mesalazine. The symptoms include pain in the sides of the abdomen and blood in the urine. Make sure to drink enough liquid during treatment with mesalazine.
Severe skin rashes, such as drug reaction with eosinophilia and systemic symptoms (DRESS), Stevens-Johnson syndrome (SSJ), and toxic epidermal necrolysis (TEN), have been observed with mesalazine treatment. Stop taking mesalazine and seek immediate medical attention if you observe any of the symptoms related to these severe skin reactions described in section 4.
Mesalazine may cause a discoloration of the urine to a reddish-brown color after contact with sodium hypochlorite bleach in the toilet water. This is a chemical reaction between mesalazine and bleach and is harmless.
Children and adolescents
The information on safety in the use of this medicine in children and adolescents is limited.
Do not administer to children under 5 years of age.
Other medicines and Claversal rectal foam
In general, you can continue treatment with other medicines while using Claversal. However, inform your doctor or pharmacist if you are using, have recently used, or might use any other medicine, including those bought without a prescription.
Claversal may interact with other medicines if taken at the same time.
In particular:
Pregnancy and breast-feeding
If you are pregnant or breast-feeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.
There is limited experience with the use of mesalazine during pregnancy and breast-feeding. The newborn may develop allergic reactions after breast-feeding, such as diarrhea. If the newborn develops diarrhea, breast-feeding should be interrupted.
The use of Claversal is not recommended during pregnancy or breast-feeding unless your doctor advises you otherwise.
Driving and using machines
No adverse effects of Claversal on the ability to drive or use machines have been reported.
Claversal rectal foam containssodium metabisulfite, methyl parahydroxybenzoate, propyl parahydroxybenzoate, and glycerol
This medicine may cause severe allergic reactions and bronchospasm (sudden feeling of suffocation) because it contains sodium metabisulfite.
This medicine may cause allergic reactions (possibly delayed) because it contains methyl parahydroxybenzoate and propyl parahydroxybenzoate.
This medicine may cause a mild laxative effect because it contains glycerol.
This medicine contains less than 23 mg of sodium (1 mmol) per dose; it is essentially sodium-free.
Follow your doctor's instructions for using Claversal exactly, regarding the way and time of using the rectal foam; otherwise, you may not benefit fully from its effects.
In case of doubt, consult your doctor or pharmacist again.
Your doctor will indicate the duration of your treatment with Claversal rectal foam. Do not stop treatment before completion, even if you feel better, as symptoms may return if treatment is stopped too soon.
Strictly follow the treatment according to your doctor's instructions, both in the acute inflammatory phase and in the maintenance time established.
The recommended dose for an adult is:
One to two applications per day (1 to 2 g), for four to six weeks.
Use in children and adolescents
The administration of Claversal to children and adolescents under 18 years of age is not recommended due to the lack of safety and efficacy data.
Do not administer to children under 5 years of age.
The use of Claversal in elderly patients should be done with caution and limited to those patients with normal renal function.
Claversal 1 g rectal foam is used rectally.
If you use more Claversal than you should
Talk to your doctor if you have used more than prescribed. In case of overdose or accidental ingestion, talk to your doctor or pharmacist immediately or call the Toxicology Information Service, phone: 91 562 04 20, indicating the medicine and the amount used. It is recommended to take the packaging and the leaflet of the medicine to the healthcare professional.
If you forget to use Claversal
Do not use a double dose to make up for forgotten doses.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
All medicines can cause allergic reactions, although severe allergic reactions are very rare. If you experience any of these symptoms after using this medicine, stop using this medicine and contact your doctor immediately:
If you experience fever or irritation of the throat or mouth, stop using this medicine and contact your doctor immediately. These symptoms may be due, very rarely, to a decrease in the number of white blood cells in the blood (a condition called agranulocytosis).
Severe side effects:
Stop taking mesalazine and seek immediate medical attention if you experience any of the following symptoms:
The following side effects have also been reported in patients using mesalazine:
Rare side effects(may affect up to 1 in 1,000 patients)
Very rare side effects(may affect less than 1 in 10,000 patients)
Side effects of unknown frequency(cannot be estimated from the available data).
Photosensitivity
More severe reactions have been reported in patients with pre-existing skin conditions, such as atopic dermatitis and atopic eczema.
If these symptoms continue or become more severe, talk to your doctor.
Reporting of side effects:
If you experience any side effects, talk to your doctor or pharmacist, even if they are not listed in this leaflet. You can also report them directly through the Spanish Medicines Monitoring System: www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not store above 30°C.
This pack is a pressurized aerosol that contains a flammable propellant. It should be kept away from any heat source, flames, or sparks, including cigarettes. It should be protected from direct sunlight and not destroyed or burned, even when empty.
Do not use this medicine after the expiry date stated on the pack after EXP. The expiry date is the last day of the month indicated.
Medicines should not be disposed of via wastewater or household waste. Place the packaging and any unused medicine in the SIGRE collection point at the pharmacy. If in doubt, ask your pharmacist how to dispose of the packaging and any unused medicine. This will help protect the environment.
Composition of Claversal 1 g rectal foam
Appearance of the product and pack contents
Rectal foam for administration. The foam is white to light brown in color.
The pack includes:
Marketing authorization holder
Faes Farma, S.A.
Autonomia Etorbidea, 10
48940 Leioa (Bizkaia)
Spain
Manufacturer
SOFAR
Via Firenze, 40
20060 Trezzano Rosa, Milan
Italy
Date of last revision of this leaflet:January 2025
Detailed and updated information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS)http://www.aemps.gob.es/
The average price of CLAVERSAL ESPUMA RECTAL (Rectal Foam) in November, 2025 is around 21.76 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.
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