Patient Leaflet Updated 03-Aug-2023 | AbbVie Ltd
Asacol 400mg MR Tablets
Asacol® 400mg MR tablets
(mesalazine)
1. What Asacol 400mg MR tablets are and what they are used for
2. Before you take Asacol 400mg MR tablets
3. How to take Asacol 400mg MR tablets
4. Possible side effects
5. How to store Asacol 400mg MR tablets
6. Further information
Asacol 400mg MR tablets contain the active substance mesalazine (also known as 5-aminosalicylic acid) which is an anti-inflammatory drug used in the treatment of:
Do not take Asacol 400mg MR tablets if you:
DO NOT give the tablets to children under 2 years of age.
TELL YOUR DOCTOR BEFORE USING mesalazine:
Asacol may produce red-brown urine discoloration after contact with sodium hypochlorite bleach in the toilet water. It concerns a chemical reaction between mesalazine and bleach and is harmless.
Serious skin reactions including Drug reaction with eosinophilia and systemic symptoms (DRESS), Stevens-Johnson syndrome (SJS), and toxic epidermal necrolysis (TEN) have been reported in association with mesalazine treatment. Stop using mesalazine and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.
Please tell your doctor if you are taking or have recently taken any other medicines, including those obtained without a prescription. Asacol 400mg MR tablets should NOT be taken with Lactulose (a medicine for constipation).
Use of non-steroidal anti-inflammatory drugs (NSAIDs such as ibuprofen, aspirin, Cox-II inhibitors) and azathioprine in particular may increase the risk of kidney reactions.
Women who are pregnant or breast-feeding should not take Asacol 400mg MR tablets unless advised otherwise by their doctor.
Ask your doctor or pharmacist for advice before taking any medicine.
Before you start treatment with Asacol 400mg tablets you will have a blood and urine test to check how well your kidneys are working and what your blood is doing. During treatment your doctor will check how well your liver, kidney and blood is working by taking blood and urine sample periodically during your treatment.
Kidney stones may develop with use of mesalazine. Symptoms may include pain in sides of abdomen and blood in urine. Take care to drink sufficient amount of liquid during treatment with mesalazine.
Asacol 400mg MR tablets are not expected to affect your ability to drive or operate machinery.
Patients who are intolerant to lactose should note that Asacol 400mg tablets contain a small amount of lactose. If your doctor has told you that you have intolerance to some sugars, contact your doctor before taking this medicine.
This medicine contains less than 1 mmol sodium (23 mg) per dosage unit, i.e. is essentially “sodium-free”.
Always take Asacol 400mg MR tablets exactly as your doctor has told you. You should check with your doctor if you are not sure.
The tablets should be swallowed whole with water; do not break, crush or chew them.
Whilst taking this medicine ensure you drink adequate fluids to remain well hydrated, especially after severe or prolonged episodes of vomiting and /or diarrhoea, high fever or heavy sweating. This is to avoid problems with your kidneys.
The usual dose is:
DO NOT take more than 6 tablets a day.
Asacol 400mg MR tablets are not recommended for use in children.
Keep taking the tablets for as long as your doctor tells you. Your symptoms may come back if you stop treatment too early. Remember to get a repeat prescription at the right time so that you do not miss a day of treatment.
Do not exceed the recommended dose. You should only take as many tablets as your doctor has instructed on the pharmacist’s label. If you take too much medicine, tell your doctor immediately or go to your nearest Accident & Emergency Department. Take the tablet pack with you if possible.
If you forget to take a dose at the required time, take it as soon as you remember and continue taking your tablets as before. DO NOT take more than two doses in one hour. If it is almost time for your next dose, wait until then and carry on as before.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Like all medicines, Asacol 400mg MR tablets can cause side effects, although not everybody gets them.
Allergic reactions can occur. Tell your doctor if you get:
Stop using mesalazine and seek medical attention immediately if you notice any of the following symptoms:
if you experience any of the following symptoms:
Common side effects (in more than 1 in 100 people but less than 1 in 10 people):
Rare side effects (in less than 1 in 1000 people):
Very rare side effects (in less than 1 in 10,000 people):
Not known (frequency cannot be estimated from available data)
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via:
United Kingdom (Northern Ireland)
or search for MHRA Yellow Card in the Google Play or Apple App Store
By reporting side effects you can help provide more information on the safety of this medicine.
Keep out of the sight and reach of children.
Store Asacol 400mg MR tablets in their original pack below 25°C (77°F) in a dry place, protected from direct sunlight.
Do not remove the moisture absorbing pouch from the bottle. The pouch is not part of your medicine and is marked DO NOT EAT. Keep the bottle tightly closed.
Do not use Asacol 400mg MR tablets after the expiry date which is stated on the pack after ‘Exp’. The expiry date refers to the last day of that month.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.
The active substance is mesalazine (also known as 5-aminosalicylic acid). Each tablet contains 400mg mesalazine.
The other ingredients are
Core: lactose monohydrate, sodium starch glycollate, magnesium stearate, talc, povidone.
Coating: methacrylic acid-methyl methacrylate copolymer (1:2), dibutyl sebacate, ferric oxide yellow (E172), ferric oxide red (E172) and macrogol 6000.
See also Section 2 on ‘Important information about some of the ingredients of Asacol 400mg MR tablets’.
Asacol 400mg MR tablets are red-brown, coated and oblong shaped. They are packed in a plastic bottle with a child-resistant closure that contains a cotton/silica gel moisture absorbing pouch. Asacol 400mg MR tablets are available in packs of 84, 90, 120 or 168 tablets (not all pack sizes may be marketed).
or
Getting more advice about ulcerative colitis or Crohn’s ileo-colitis
In addition to advice and information available from your doctor and pharmacist, you may wish to contact Crohn’s and Colitis UK for Colitis and Crohn’s Disease which offers information, advice and local support groups.
Telephone Information Line:
0845 130 2233 (Monday to Friday 10am - 1pm)
Crohn’s and Colitis Support Line:
0845 130 3344 (Monday to Friday 1.00pm- 3.30pm / 6.30pm - 9pm)
Large print, braille, audio format leaflet
To obtain this leaflet in large print, braille or audio format, please call the following freephone number: 0800 198 5000.
Asacol® is a Trademark
Marketing Authorisation Number:
PL 41042/0053
This leaflet was last revised in May 2023
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www.abbvie.co.uk