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Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS

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About the medicine

How to use Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS

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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.

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Introduction

Package Leaflet: Information for the Patient

Acetylsalicylic Acid PENSA 100 mg Gastro-Resistant Tablets EFG

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 Acetylsalicylic Acid PENSA and what is it used for
  2. What you need to know before you take Acetylsalicylic Acid PENSA
  3. How to take Acetylsalicylic Acid PENSA
  4. Possible side effects
  5. Storage of Acetylsalicylic Acid PENSA
  6. Contents of the pack and other information

1. What is Acetylsalicylic Acid PENSA and what is it used for

This medicine contains acetylsalicylic acid, which at low doses belongs to a group of medicines called antiplatelet agents. Platelets are small blood cells that produce blood clotting and are involved in thrombosis. When a blood clot forms in an artery, it stops blood flow and cuts off oxygen supply. When this happens in the heart, it can cause a heart attack or angina; in the brain, it can cause a stroke.

Acetylsalicylic Acid PENSA is taken to reduce the risk of thrombus formation and consequently prevent:

  • heart attacks
  • strokes
  • cardiovascular problems in patients with stable or unstable angina (a type of chest pain).

Acetylsalicylic Acid PENSA is also used to prevent thrombus formation after certain types of heart surgery to widen or unblock blood vessels.

This medicine is not recommended for emergency cases. It can only be used as a preventive treatment.

Doctor consultation

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Discuss your symptoms and treatment with a doctor online.

2. What you need to know before you take Acetylsalicylic Acid PENSA

Do not take Acetylsalicylic Acid PENSA:

  • if you are allergic (hypersensitive) to acetylsalicylic acid or any of the other ingredients of this medicine (listed in section 6).
  • if you are allergic to other salicylates or non-steroidal anti-inflammatory drugs (NSAIDs).

NSAIDs are often used for arthritis or rheumatism and pain

  • if you have had an asthma attack or swelling of some parts of the body, e.g. face, lips, throat or tongue (angioedema) after taking salicylates or NSAIDs
  • if you currently have or have ever had a stomach or intestinal ulcer or any other type of bleeding such as a stroke
  • if you have ever had a problem with your blood not clotting properly
  • if you have severe liver or kidney problems
  • if you are in the last 3 months of your pregnancy; you should not use doses greater than 100 mg per day (see section "Pregnancy, breastfeeding and fertility")
  • if you are taking a medicine called methotrexate (e.g. to treat cancer or rheumatoid arthritis) in doses greater than 15 mg per week

Warnings and precautions

Before starting treatment with Acetylsalicylic Acid PENSA, inform your doctor:

  • if you have kidney, liver or heart problems
  • if you have or have ever had stomach or intestinal problems
  • if you have high blood pressure
  • if you are asthmatic, have hay fever, nasal polyps or other chronic respiratory diseases; acetylsalicylic acid may induce an asthma attack
  • if you have ever had gout
  • if you have heavy menstrual periods

You should consult a doctor immediately if your symptoms worsen or if you experience serious or unexpected side effects, e.g. unusual bleeding symptoms, severe skin reactions or any other sign of severe allergy (see section "Possible side effects").

Inform your doctor if you have scheduled surgery (even minor surgery, such as a tooth extraction) as acetylsalicylic acid is an anticoagulant, there may be an increased risk of bleeding.

Acetylsalicylic acid can produce Reye's syndrome when administered to children. Reye's syndrome is a very rare disease that affects the brain and liver and can be life-threatening. For this reason, Acetylsalicylic Acid PENSA should not be administered to children under 16 years of age, unless prescribed by a doctor.

You should be careful not to become dehydrated (you may feel thirsty and have a dry mouth) as the use of acetylsalicylic acid at the same time may cause kidney function to deteriorate.

This medicine is not suitable for relieving pain or reducing fever.

If you are in any of the above cases, or if you are not sure, consult your doctor or pharmacist.

Consult your doctor or pharmacist before starting to take Acetylsalicylic Acid PENSA 100 mg.

Taking Acetylsalicylic Acid PENSA with other medicines

Inform your doctor or pharmacist that you are taking, have recently taken or may need to take any other medicine.

The effect of treatment may be influenced if acetylsalicylic acid is taken at the same time as other medicines used to:

  • prevent blood clots (e.g. warfarin, heparin, clopidogrel)
  • prevent organ rejection after transplantation (cyclosporin, tacrolimus)
  • treat high blood pressure (e.g. diuretics and ACE inhibitors)
  • regulate heart rhythm (digoxin)
  • treat manic-depressive disorder (lithium)
  • relieve pain and inflammation (e.g. NSAIDs such as ibuprofen, or steroids)
  • treat gout (e.g. probenecid)
  • treat epilepsy (valproate, phenytoin)
  • treat glaucoma (acetazolamide)
  • treat cancer or rheumatoid arthritis (methotrexate; in doses less than 15 mg per week)
  • treat diabetes (e.g. glibenclamide)
  • treat depression (selective serotonin reuptake inhibitors (SSRIs) such as sertraline or paroxetine)

Taking Acetylsalicylic Acid PENSA with food and drinks

Drinking alcohol may possibly increase the risk of gastrointestinal bleeding and prolong bleeding time.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Pregnancy

Pregnant women should not take acetylsalicylic acid during pregnancy unless their doctor advises them to.

If you continue or start treatment with this medicine during pregnancy following your doctor's instructions, use acetylsalicylic acid according to your doctor's instructions and do not use a dose greater than recommended.

Pregnancy - last trimester

Do not take this medicine in doses greater than 100 mg per day if you are in the last 3 months of pregnancy, as it may harm the fetus or cause problems during delivery. It may cause kidney and heart problems in your fetus. It may affect your and your baby's tendency to bleed and delay or prolong delivery more than expected.

If you take this medicine in low doses (up to and including 100 mg per day), you will need strict obstetric monitoring according to your doctor's instructions.

Pregnancy - first and second trimester.

You should not take this medicine during the first 6 months of pregnancy unless it is absolutely necessary and your doctor advises you to. If you need treatment during this period or while trying to conceive, you should use the lowest dose for the shortest possible time. If you take it for more than a few days from the 20th week of pregnancy, this medicine may cause kidney problems in your fetus, which may lead to low levels of amniotic fluid surrounding the baby (oligohydramniosis) or narrowing of a blood vessel (ductus arteriosus) in the baby's heart.

If you need treatment for more than a few days, your doctor may recommend additional monitoring.

You should not take Acetylsalicylic Acid PENSA if you are in the last 3 months of pregnancy, unless your doctor advises you to, and in that case, the daily dose should not exceed 100 mg (see section "Do not take Acetylsalicylic Acid PENSA"). Normal or high doses of this medicine during the last phase of pregnancy may cause serious complications in the mother or baby.

Breastfeeding

Women who are breastfeeding should not take acetylsalicylic acid unless their doctor advises them to.

Fertility

Acetylsalicylic acid may affect female fertility by its effect on ovulation. This effect is reversible after treatment is stopped.

Driving and using machines

Acetylsalicylic Acid PENSA should not affect your ability to drive or use machines.

Acetylsalicylic Acid PENSA contains sodium

This medicine contains less than 1 mmol of sodium (23 mg) per dose, i.e. it is essentially "sodium-free.

3. How to take Acetylsalicylic Acid PENSA

Follow exactly the administration instructions of this medicine indicated by your doctor or pharmacist. In case of doubt, consult your doctor or pharmacist again.

Adults

Prevention of heart attacks:

  • The recommended dose is 75-160 mg once a day.

Prevention of strokes:

  • The recommended dose is 75-325 mg once a day.

Prevention of cardiovascular problems in patients with stable or unstable angina (a type of chest pain):

  • The recommended dose is 75-160 mg once a day.

Prevention of thrombus formation after certain types of heart surgery:

  • The recommended dose is 75-160 mg once a day.

Elderly patients

Doses are the same as for adults. In general, acetylsalicylic acid should be used with caution in elderly patients who are more prone to adverse events. Treatment should be reviewed at regular intervals.

Children

Acetylsalicylic acid should not be administered to children and adolescents under 16 years of age, unless prescribed by a doctor (see section "Special warnings and precautions for use").

Method of administration

Oral use.

The tablets should be swallowed whole with a sufficient amount of liquid (half a glass of water). The tablets have a gastro-resistant coating that prevents irritating effects on the intestine, and therefore should not be crushed, broken or chewed.

If you take more Acetylsalicylic Acid PENSA than you should

If you (or someone else) accidentally take too many tablets, you should inform your doctor immediately, contact the nearest emergency service or call the Toxicology Information Service, telephone 91 562 04 20, indicating the medicine and the amount taken.

Show your doctor the medicine or the empty package.

Symptoms of overdose may include ringing in the ears, hearing problems, headache, dizziness, confusion, nausea, vomiting and abdominal pain. A large overdose may lead to faster than normal breathing (hyperventilation), fever, excessive sweating, restlessness, convulsions, hallucinations, low blood sugar, coma and shock.

If you forget to take Acetylsalicylic Acid PENSA

If you forget to take a dose, wait until it is time to take the next dose and continue treatment as usual.

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

If you have any further questions on the use of this product, 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.

If you notice any of the following serious side effects, stop taking Acetylsalicylic Acid PENSA and contact your doctor immediately:

  • Sudden difficulty breathing, swelling of your lips, face or body, rash, fainting or difficulty swallowing (severe allergic reaction).
  • Redness of the skin with blisters or peeling and may be associated with high fever and joint pain. This could be erythema multiforme, Stevens-Johnson syndrome or Lyell syndrome.
  • Unusual bleeding, such as coughing up blood, blood in your vomit or urine, or black stools.

Common side effects (may affect up to 1 in 10 people):

  • Indigestion.
  • Increased tendency to bleed.

Uncommon side effects (may affect up to 1 in 100 people):

  • Hives.
  • Runny nose.
  • Difficulty breathing.

Rare side effects (may affect up to 1 in 1,000 people):

  • Severe bleeding in the stomach or intestines, cerebral hemorrhage; altered blood cell count.
  • Nausea and vomiting.
  • Cramps in the lower respiratory tract, asthma attack.
  • Inflammation of blood vessels.
  • Bruises with purple spots (cutaneous bleeding).
  • Severe skin reactions such as a rash known as erythema multiforme, and life-threatening forms, Stevens-Johnson syndrome and Lyell syndrome.
  • Hypersensitivity reactions, such as swelling of, e.g. lips, face or body, or shock.
  • Abnormally heavy or prolonged menstrual periods.

Side effects of unknown frequency:

  • Ringing in your ears (tinnitus) or reduced hearing.
  • Headache.
  • Dizziness.
  • Ulcers in the stomach or intestine and perforation.
  • Prolonged bleeding time.
  • Disorder of kidney function.
  • Disorder of liver function.
  • High levels of uric acid in the blood.

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 to the Spanish Medicines Agency's website: www.notificaRAM.es

By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Acetylsalicylic Acid PENSA

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 carton after EXP. The expiry date refers to the last day of the month shown.

Medicines should not be disposed of via wastewater or household waste. Return any unused medicine to your pharmacist. Ask your pharmacist how to dispose of medicines no longer required. This will help to protect the environment.

Store below 30°C. Do not refrigerate. Keep in the original package.

6. Contents of the pack and other information

Composition of Acetylsalicylic Acid PENSA

  • The active ingredient is acetylsalicylic acid
  • The other ingredients are: powdered cellulose, pregelatinized corn starch without gluten, Acryl-EZE Clear (93F19255) (methacrylic acid copolymer type C, talc, macrogol, anhydrous colloidal silica, sodium bicarbonate and sodium lauryl sulfate).

Appearance of the product and contents of the pack

Acetylsalicylic Acid PENSA 100 mg tablets are round, biconvex and white. They are coated with a gastro-resistant coating that makes acetylsalicylic acid not released immediately in the stomach, but in a delayed manner in the duodenum. They are available in packs of 30 tablets in PVC-Al/PVC-PVDC blisters.

Marketing authorization holder and manufacturer

Marketing authorization holder:

Towa Pharmaceutical, S.A.

C/ de Sant Martí, 75-97

08107 Martorelles (Barcelona)

Spain

Manufacturer:

TOLL MANUFACTURING SERVICES S.L.

c/ Aragoneses 2-

28108 – Alcobendas - Madrid

Spain

or

FARMALIDER S.A.

c/ Aragoneses, 2 -

28108 – Alcobendas – Madrid

Spain

or

Laboratorios Medicamentos Internacionales S.A.

C/ Solana 26,

28850 Torrejón de Ardoz, Madrid

Spain

Date of last revision of this leaflet: September 2025

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

Online doctors for Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS

Discuss questions about Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Tarek Agami

General medicine 11 years exp.

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

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Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

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Nuno Tavares Lopes

Family medicine 18 years exp.

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC.

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Dr. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

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Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques.

For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance.

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Frequently Asked Questions

Is a prescription required for Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS?
Acetylsalicylic acid PENSA 100 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 Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS?
The active ingredient in Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS is acetylsalicylic acid. This information helps identify medicines with the same composition but different brand names.
How much does Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS cost in pharmacies?
The average pharmacy price for Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS is around 1.45 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS?
Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS is manufactured by Towa Pharmaceutical S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of Acetylsalicylic acid PENSA 100 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 Acetylsalicylic acid PENSA 100 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 Acetylsalicylic acid PENSA 100 mg GASTRO-RESISTANT TABLETS?
Other medicines with the same active substance (acetylsalicylic acid) include A.A.S. 100 mg TABLETS, Acetylsalicylic Acid ALTER 100 mg Gastro-Resistant Tablets, ACETIC ACID SALICYLIC ARISTO 100 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.
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