Bg pattern

ASACOL 800 MG GASTRO-RESISTANT TABLETS

Prescription review online

Prescription review online

A doctor will review your case and decide whether a prescription is medically appropriate.

Talk to a doctor about this medicine

Talk to a doctor about this medicine

Discuss your symptoms and possible next steps in a quick online consultation.

This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use ASACOL 800 MG GASTRO-RESISTANT TABLETS

Translated with AI

This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

Show original

Introduction

Package Leaflet: Information for the User

Asacol 800 mg Gastro-Resistant Tablets

mesalazine

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.

Contents of the pack:

1 What is Asacol and what is it used for

2 Before you take Asacol

3 How to take Asacol

4 Possible side effects

5 Storing Asacol

6 Contents of the pack and further information

1. What is Asacol and what is it used for

Asacol is indicated for:

  • Treatment of acute phase of mild to moderate ulcerative colitis.
  • Maintenance treatment of ulcerative colitis remission (including patients who do not tolerate sulfasalazine).
  • Maintenance treatment of Crohn's disease remission.
Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. Before you take Asacol

Do not take Asacol

  • If you are allergic to mesalazine or any of the other ingredients of this medicine (listed in section 6).
  • If you are allergic to salicylates (e.g. aspirin).
  • If you have severe liver impairment.
  • If you have severe kidney impairment.

Warnings and precautions

Consult your doctor before taking Asacol, especially if you:

  • suffer from any lung disease, such as asthma.
  • have had an allergy to sulfasalazine in the past.
  • have ever had heart allergic reactions such as inflammation of the heart muscle or pericardium. If you have had previous suspicions of mesalazine-induced allergic reactions in the heart, then you should not take Asacol. Asacol can be used with caution if you have previously suffered a non-mesalazine-induced heart allergic reaction.
  • If you have a stomach or intestinal ulcer, you should take Asacol with caution.
  • If you have ever had a severe skin rash or skin peeling, blisters, or sores in the mouth after using mesalazine.

If you experience severe or recurrent headache, vision changes, or ringing or buzzing in the ears, contact your doctor immediately.

Kidney stones may occur with the use of mesalazine. Symptoms include pain in the sides of the abdomen and blood in the urine. Make sure to drink a sufficient amount of liquid during treatment with mesalazine.

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.

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 medical attention immediately if you observe any of the symptoms related to these severe skin rashes described in section 4.

Evaluation of your liver, kidney, and blood

Before and during the intake of Asacol, your doctor may want to evaluate you from time to time to check that your liver, kidneys, blood, and lungs are in good condition.

Tablets in the stool

There are some reports of intact tablets in the stool. What appears to be an intact tablet may sometimes be the remains of the tablet coating. If you frequently observe tablets or their coatings in the stool, you should consult your doctor.

Children and adolescents

The use of Asacol is only recommended in children from 6 years of age.

Elderly patients

Asacol should be used with caution, and the doctor will evaluate both renal and hepatic function before starting treatment.

Other medicines and Asacol

Tell your doctor or pharmacist if you are using or have recently used or might use any other medicines, such as:

  • Medicines to prevent blood clotting (anticoagulants, e.g. warfarin).
  • Medicines to reduce the activity of the immune system (e.g. azathioprine or 6-mercaptopurine or thioguanine).

Using Asacol with food, drinks, and alcohol

The consumption of food, drinks, and alcohol does not interfere with the use of Asacol.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, 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 breastfeeding.

Newborns may develop allergic reactions after breastfeeding, such as diarrhea. If the newborn presents with diarrhea, breastfeeding should be interrupted.

Driving and using machines

The influence of Asacol on the ability to drive and use machines is negligible or non-existent. However, if it affects you in any way, do not drive or use machines.

Asacol contains milk sugar (lactose)

This medicine contains lactose. If your doctor has told you that you have an intolerance to some sugars, consult them before taking this medicine.

3. How to take Asacol

Follow the administration instructions of this medicine exactly as indicated by your doctor. If in doubt, consult your doctor or pharmacist again.

Asacol should be taken orally.

The tablets should be swallowed whole and before meals.

The recommended dose is:

Adults

Ulcerative colitis, acute treatment of mild to moderate episodes: 2.4 g (3 tablets, divided into three doses per day).

Maintenance treatment of ulcerative colitis: 0.8 g (1 tablet) to 1.6 g (2 tablets in separate doses) per day.

Crohn's disease, maintenance treatment: individualized dose up to a maximum of 2.4 g per day (2 to 3 tablets distributed in several doses per day).

Elderly patients

The administration of Asacol in elderly patients should be done with caution and always limited to those patients with normal renal function.

Use in children

The efficacy and safety of Asacol in children under 5 years of age have not been established.

Information on the effect in children (between 6 and 18 years of age) is limited.

Children from 6 years of age

The general recommendation is that half the adult dose can be administered to children up to 40 kg in weight; and the normal adult dose to children over 40 kg. However, your doctor will indicate the appropriate dose to treat your disease.

If you take more Asacol than you should

In case of overdose or accidental ingestion, consult your doctor or pharmacist or go to the nearest hospital, or call the Toxicology Information Service. Telephone 91 562 04 20 (indicating the medicine and the amount ingested).

In case of massive ingestion of the tablets, treatment consists of gastric lavage, induction of vomiting, along with symptomatic and supportive measures. There is no specific antidote.

If you forget to take Asacol

If you have forgotten to take a dose, take it as soon as you remember, and then take the next dose at the usual time.

Do not take a double dose to make up for forgotten doses.

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

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

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

Adverse reactions have been reported in specific organs affecting the heart, lungs, liver, kidneys, pancreas, skin, and subcutaneous tissue.

Stop taking Asacol immediately and consult a doctor urgently if you develop unexplained bruising (without injury), bleeding, purple spots, or spots under the skin, anemia (feeling tired, weak, or pale, especially in the lips, nails, and inside the eyelids), fever (high temperature), sore throat, or unusual bleeding (e.g. nosebleeds), reddish patches, or circular or coin-shaped patches on the chest, often with central blisters, skin peeling, mouth ulcers, throat ulcers, nose ulcers, genital ulcers, eye ulcers, generalized rash, fever, and swollen lymph nodes. These severe skin rashes are often preceded by fever or flu-like symptoms.

Tell your doctor immediatelyif you experience severe or recurrent headache, vision changes, or ringing or buzzing in the ears. These could be symptoms of increased pressure inside your skull (idiopathic intracranial hypertension) (frequency not known [cannot be estimated from the available data]).

The following adverse reactions have been reported in the approximate frequencies shown:

Common(may affect up to 1 in 10 patients)

  • Rash
  • Indigestion

Uncommon(may affect up to 1 in 100 patients)

  • Fever
  • High number of white blood cells, called eosinophils
  • Hives, itching of the skin
  • Chest pain

Rare(may affect up to 1 in 1,000 patients)

  • Headache
  • Feeling of tingling, pinching, and numbness
  • Dizziness
  • Heart inflammation with signs such as chest pain and palpitations
  • Diarrhea, nausea, stomach pain, flatulence, feeling of restlessness, and stomach discomfort, with nausea and vomiting.
  • Increased sensitivity of the skin to sunlight and ultraviolet light (photosensitivity)

Very rare(may affect up to 1 in 10,000 patients)

  • Severe reduction of blood cells that can cause weakness, bruising, increase the risk of infections, low white blood cell count, reduction of platelets which increases the risk of bleeding
  • Allergic reactions such as rash and skin eruptions
  • Fever that appears while taking the medicine and disappears when stopping it (drug fever)
  • Ulcerative colitis that can include the entire large intestine
  • Nerve damage or abnormal nerves causing numbness or tingling
  • Lung disease (scarring of lung tissue, allergic reaction), resulting in difficulty breathing or wheezing and fluid accumulation in the lungs, pneumonia
  • Pancreas inflammation (associated with pain in the upper abdomen and back and feeling of discomfort)
  • Abnormal liver function test results, hepatitis (inflammation of the liver leading to flu-like symptoms and jaundice)
  • Hair loss
  • Muscle pain (myalgia) or joint pain (arthralgia)
  • Kidney problems (such as inflammation and scarring of the kidney), kidney failure, which can be reversible if treatment is stopped early
  • Reversible reduction of sperm production
  • Cough

Frequency not known(cannot be estimated from the available data)

  • Autoimmune disease (lupus-like syndrome) that can cause inflammation of the pericardium or the membranes surrounding the lungs and heart, rash, and/or joint pain
  • Weight loss
  • Abnormal laboratory test results
  • Severe skin diseases (Erythema multiforme, Stevens-Johnson syndrome, and Toxic Epidermal Necrolysis)
  • Acute chest pain and dry cough (inflammation of the membrane covering the lungs)
  • Kidney stones and associated kidney pain (see also section 2)

Reporting of side effects

If you experience any side effects, talk to your doctor or pharmacist, even if it is possible side effects not listed in this leaflet. You can also report side effects directly through the Spanish Medicines and Healthcare Products Agency (AEMPS) website: www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storing Asacol

This medicine does not require any special storage conditions. Store in the original packaging.

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 packaging after EXP. The expiry date is the last day of the month shown.

Medicines should not be disposed of via wastewater or household waste. Place the packaging and any unused medicine in the pharmacy's SIGRE collection point. If in doubt, ask your pharmacist how to dispose of the packaging and any unused medicine. This will help protect the environment.

6. Contents of the pack and further information

Composition of Asacol 800 mg Gastro-Resistant Tablets

  • The active ingredient is mesalazine. Each tablet contains 800 mg of mesalazine.
  • The other ingredients are lactose, potato starch, magnesium stearate, talc, povidone, methacrylic acid copolymer type B, triethyl citrate, yellow iron oxide (E172), red iron oxide (E172), and polyethylene glycol 6000.

Appearance of the product and pack contents

Reddish-brown, oblong, gastro-resistant tablets contained in PVC/aluminum blisters.

Available in packs of 60 or 90 gastro-resistant tablets.

Marketing authorization holder

TILLOTTS PHARMA SPAIN, S.L.U.

Travessera de Gràcia 58, 5º 3ª

08006 Barcelona

Spain

Manufacturer

HAUPT PHARMA WULFING GMBH

Bethelner Landstrasse, 18

Gronau D-31028

GERMANY

Date of last revision of this leaflet:May 2025

Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Healthcare Products (AEMPS) http://www.aemps.gob.es/

Online doctors for ASACOL 800 MG GASTRO-RESISTANT TABLETS

Discuss questions about ASACOL 800 MG GASTRO-RESISTANT TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

0.0 (0)
Doctor

Hocine Lokchiri

General medicine 21 years exp.

Dr. Hocine Lokchiri is a French consultant with over 20 years of experience in General and Emergency Medicine. He works with adults and children, helping patients with urgent symptoms, infections, sudden health changes and everyday medical concerns that require timely evaluation. His background includes clinical practice in France, Switzerland and the United Arab Emirates, which allows him to navigate different healthcare systems and manage a wide range of conditions with confidence. Patients value his calm, structured approach, clear explanations and evidence-based decision-making.

Online consultations with Dr. Lokchiri are suitable for many situations when someone needs quick medical guidance, reassurance or a clear next step. Common reasons for booking include:

  • fever, chills, fatigue and viral symptoms
  • cough, sore throat, nasal congestion, breathing discomfort
  • bronchitis and mild asthma flare-ups
  • nausea, diarrhoea, abdominal pain, digestive infections
  • rashes, allergic reactions, redness, insect bites
  • muscle or joint pain, mild injuries, sprains
  • headache, dizziness, migraine symptoms
  • stress-related symptoms, sleep disturbances
  • questions about test results and treatment plans
  • management of chronic conditions in stable phases
Many patients reach out when symptoms appear suddenly and cause concern, when a child becomes unwell unexpectedly, when a rash changes or spreads, or when it’s unclear whether an in-person examination is necessary. His emergency medicine background is particularly valuable online, helping patients understand risk levels, identify warning signs and choose safe next steps.

Some situations are not suitable for online care. If a patient has loss of consciousness, severe chest pain, uncontrolled bleeding, seizures, major trauma or symptoms suggesting a stroke or heart attack, he will advise seeking immediate local emergency services. This improves safety and ensures patients receive the right level of care.

Dr. Lokchiri’s professional training includes:

  • Advanced Trauma Life Support (ATLS)
  • Basic and Advanced Cardiac Life Support (BLS/ACLS)
  • Pediatric Advanced Life Support (PALS)
  • Prehospital Trauma Life Support (PHTLS)
  • eFAST and critical care transthoracic echocardiography
  • aviation medicine
He is an active member of several professional organisations, including the French Society of Emergency Medicine (SFMU), the French Association for Emergency Physicians (AMUF) and the Swiss Society of Emergency and Rescue Medicine (SGNOR). In consultations, he works with clarity and precision, helping patients understand their symptoms, possible risks and the safest treatment options.
Camera Book a video appointment
€58
5.0 (140)
Doctor

Yevgen Yakovenko

General surgery 12 years exp.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

  • Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
  • Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
  • Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
  • Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
  • Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
  • Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
  • Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
  • Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
  • Member of the German Society of Surgeons (BDC).
  • Certified in radiological diagnostics and robotic surgery.
  • Active participant in international medical conferences and research.

Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

Camera Book a video appointment
€50
5.0 (29)
Doctor

Anna Biriukova

General medicine 6 years exp.

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.
Camera Book a video appointment
€60
5.0 (29)
Doctor

Dmytro Horobets

Family medicine 7 years exp.

Dr. Dmytro Horobets is a licensed family medicine physician in Poland, specialising in endocrinology, diabetology, obesity management, gastroenterology, pediatrics, general surgery, and pain medicine. He offers online consultations for adults and children, providing personalised medical support for a wide range of acute and chronic health concerns.

Areas of expertise:

  • Endocrinology: diabetes type 1 and type 2, prediabetes, thyroid disorders, metabolic syndrome, hormonal imbalance.
  • Obesity medicine: structured weight management plans, nutritional counselling, obesity-related health risks.
  • Gastroenterology: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), liver and biliary conditions.
  • Pediatric care: infections, respiratory symptoms, digestive issues, growth and development monitoring.
  • General surgery support: pre- and post-surgical consultations, wound care, rehabilitation.
  • Pain management: chronic and acute pain, back pain, joint pain, post-traumatic pain syndromes.
  • Cardiovascular health: hypertension, cholesterol control, risk assessment for heart disease.
  • Preventive medicine: regular check-ups, health screenings, long-term management of chronic conditions.

Dr. Horobets combines evidence-based medicine with a patient-centred approach. He carefully evaluates each patient’s medical history and symptoms, offering clear explanations and structured treatment plans adapted to individual needs.

Whether you need help managing diabetes, tackling weight-related health issues, interpreting lab results, or receiving general family medicine support, Dr. Horobets provides professional online care tailored to your specific health goals.

Camera Book a video appointment
€60

Frequently Asked Questions

Is a prescription required for ASACOL 800 MG GASTRO-RESISTANT TABLETS?
ASACOL 800 MG GASTRO-RESISTANT TABLETS requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in ASACOL 800 MG GASTRO-RESISTANT TABLETS?
The active ingredient in ASACOL 800 MG GASTRO-RESISTANT TABLETS is mesalazine. This information helps identify medicines with the same composition but different brand names.
How much does ASACOL 800 MG GASTRO-RESISTANT TABLETS cost in pharmacies?
The average pharmacy price for ASACOL 800 MG GASTRO-RESISTANT TABLETS is around 35.36 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures ASACOL 800 MG GASTRO-RESISTANT TABLETS?
ASACOL 800 MG GASTRO-RESISTANT TABLETS is manufactured by Tillotts Pharma Spain S.L.U.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of ASACOL 800 MG GASTRO-RESISTANT TABLETS online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether ASACOL 800 MG GASTRO-RESISTANT TABLETS is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to ASACOL 800 MG GASTRO-RESISTANT TABLETS?
Other medicines with the same active substance (mesalazine) include ASACOL 1 G SUPPOSITORIES, ASACOL 1600 mg GASTRO-RESISTANT TABLETS, ASACOL 400 mg GASTRO-RESISTANT TABLETS. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
bg-pattern-dark

Stay informed about Oladoctor

News about new services, product updates and useful information for patients.

Follow us on social media