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ASPIRIN 500 mg EFFERVESCENT TABLETS

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About the medicine

How to use ASPIRIN 500 mg EFFERVESCENT 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 User

Aspirin 500 mg Effervescent Tablets

Acetylsalicylic Acid

Read the entire package leaflet carefully before starting to take this medication, as it contains important information for you.

Follow the administration instructions for the medication contained in this package leaflet or as indicated by your doctor or pharmacist.

  • Keep this package leaflet, as you may need to read it again.
  • If you need advice or more information, consult your pharmacist.
  • If you experience side effects, consult your doctor or pharmacist, even if they are not listed in this package leaflet. See section 4.
  • You should consult a doctor if your symptoms worsen or do not improve after 5 days for pain or 3 days for fever.

Package Leaflet Contents

  1. What is Aspirin and what is it used for
  2. What you need to know before taking Aspirin
  3. How to take Aspirin
  4. Possible side effects
  5. Storage of Aspirin
  6. Package Contents and Additional Information

1. What is Aspirin and what is it used for

The active ingredient of this medication, acetylsalicylic acid, belongs to a group of medications known as non-steroidal anti-inflammatory drugs (NSAIDs). It relieves pain and reduces fever.

This medication is used for the symptomatic relief of occasional mild or moderate pain, such as headaches, dental pain, menstrual pain, muscle pain (cramps) or back pain (lumbago) and febrile states in adults and adolescents over 16 years of age.

You should consult a doctor if your symptoms worsen or do not improve after 5 days for pain or 3 days for fever.

Doctor consultation

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2. What you need to know before taking Aspirin

Do not take Aspirin if

  • you are allergic or have had an allergic reaction to acetylsalicylic acid or any other component of this medication (listed in section 6),
  • you have stomach ulcers, intestinal ulcers, or recurring gastric discomfort,
  • you have had allergic reactions of an asthmatic type (difficulty breathing, shortness of breath, bronchospasm, and in some cases coughing or wheezing when breathing) when taking anti-inflammatory medications, acetylsalicylic acid, other analgesics, as well as the tartrazine dye,
  • you have asthma,
  • you have nasal polyps associated with asthma that are produced or increased by acetylsalicylic acid,
  • you have hemophilia or other blood coagulation problems,
  • you are being treated with oral anticoagulant medications,
  • you have kidney and/or liver disease (renal and/or hepatic insufficiency),
  • you are under 16 years of age, as the use of acetylsalicylic acid has been linked to Reye's Syndrome, a rare but serious disease,
  • you are in your third trimester of pregnancy.

Be careful with Aspirin

  • if you have high blood pressure, or have reduced kidney, heart, or liver function, or have blood coagulation disorders,
  • if you have had stomach or intestinal ulcers,
  • if you are being treated with anticoagulants, you should consult your doctor before taking this medication,
  • if you are taking anti-inflammatory medications or other types of medications, as certain medications can interact with Aspirin 500 mg effervescent tablets and produce undesirable effects (see "Use of other medications"),
  • if you are allergic to other anti-inflammatory or anti-rheumatic medications,
  • if you have a glucose-6-phosphate dehydrogenase deficiency,
  • if you have or have had rhinitis or urticaria,
  • if you have recently undergone or are scheduled to undergo surgery in the next 7 days, including dental surgery,
  • if you are in your first or second trimester of pregnancy,
  • do not systematically administer to prevent possible discomfort caused by vaccinations.

Other medications and Aspirin

Tell your doctor or pharmacist if you are using or have recently used other medications, including those purchased without a prescription, homeopathic remedies, herbal medicines, and other health-related products, as it may be necessary to interrupt treatment or adjust the dose of one of them.

This is especially important in the case of:

  • other analgesics or non-steroidal anti-inflammatory medications (medications used to treat pain and/or muscle inflammation),
  • certain antidepressants, such as selective serotonin reuptake inhibitors, as they increase the risk of bleeding,
  • anticoagulants (medications used to "thin" the blood and prevent the formation of clots) such as warfarin,
  • oral antidiabetics (medications to lower blood sugar levels),
  • barbiturates (medications used to treat seizures),
  • beta blockers (medications to control high blood pressure),
  • cimetidine and ranitidine (used for stomach acidity),
  • medications used to prevent transplant rejection (cyclosporine and tacrolimus),
  • corticosteroids, as they may increase the risk of gastrointestinal bleeding,
  • digoxin (medication for the heart),
  • high blood pressure (diuretics and ACE inhibitors),
  • phenytoin and valproic acid (antiepileptics),
  • interferon alpha (used to treat certain viral and tumor infections),
  • lithium (used in certain psychiatric illnesses),
  • cancer or rheumatoid arthritis (methotrexate),
  • medications used to treat gout (probenecid),
  • vancomycin (antibiotic used for infections),
  • zidovudine (used in the treatment of patients infected with the human immunodeficiency virus, the cause of AIDS).

Interference with diagnostic tests

If you are going to have any diagnostic tests (including blood or urine tests), inform your doctor that you are taking this medication, as it may alter the results.

Taking Aspirin with food, drinks, and alcohol

Take this medication after meals or with some food.

If you regularly consume alcohol (three or more alcoholic beverages - beer, wine, liquor, etc. - per day), taking Aspirin may cause stomach bleeding.

Pregnancy

Consult your doctor or pharmacist before using any medication.

If you are pregnant or think you may be pregnant, consult your doctor before taking this medication.

Pregnancy - last trimester

Do not take Aspirin if you are in the last 3 months of pregnancy, as it may harm the fetus or cause problems during delivery. This medication may cause kidney and heart problems in the fetus. It may affect your bleeding tendency and that of your baby, causing a possible delay in delivery or prolonging it more than expected.

Pregnancy - first and second trimester

Do not take Aspirin during the first 6 months of pregnancy unless absolutely necessary and advised by your doctor. If you need treatment during this period or while trying to become pregnant, the dose will be limited to the lowest possible dose for the shortest possible time.

If you take Aspirin for several days from the 20th week of pregnancy, it may cause kidney problems in the fetus that could lead to low levels of amniotic fluid (oligohydramnios) or narrowing of a blood vessel (ductus arteriosus) in the baby's heart. If you need treatment for several days, your doctor may recommend additional monitoring.

Breastfeeding

Consult your doctor or pharmacist before using any medication.

Women who are breastfeeding should consult their doctor before using this medication, as acetylsalicylic acid passes into breast milk.

Use in children

Do not administer to children under 16 years of age.

Use in adults over 65 years of age

Older adults should not take this medication without consulting their doctor, as they are more likely to experience side effects.

Driving and using machines

No effects on the ability to drive or use machines have been reported.

Aspirin contains sodium

This medication contains 543 mg of sodium (the main component of table salt) per effervescent tablet. This is equivalent to 27% of the maximum recommended daily sodium intake for an adult.

Consult your doctor or pharmacist if you need to take one or more tablets daily for a prolonged period, especially if you have been advised to follow a low-sodium diet.

3. How to take Aspirin

Follow the administration instructions for the medication contained in this package leaflet or as indicated by your doctor or pharmacist. In case of doubt, ask your doctor or pharmacist.

This medication is administered orally.

Adults and adolescents over 16 years of age: 1 effervescent tablet (500 mg of acetylsalicylic acid) every 4 or 6 hours, if necessary. Do not exceed 8 effervescent tablets (4 g of acetylsalicylic acid) in 24 hours.

Patient with reduced liver or kidney function: consult your doctor, as the dose should be reduced.

Dissolve the effervescent tablet completely, preferably in a glass of water, and drink the entire contents of the glass when the bubbling has stopped completely.

Take the medication after meals or with some food, especially if you experience digestive discomfort.

Do not take this medication on an empty stomach.

Always use the lowest effective dose.

The administration of this preparation is subject to the appearance of painful or febrile symptoms. As these symptoms disappear, this medication should be discontinued.

If the pain persists for more than 5 days, or the fever for more than 3 days, or the symptoms worsen or other symptoms appear, you should interrupt treatment and consult your doctor.

If you take more Aspirin than you should

The main symptoms of overdose are: headache, dizziness, ringing in the ears, blurred vision, drowsiness, sweating, rapid breathing, mental confusion, nausea, vomiting, and occasionally diarrhea.

It is recommended to take the package and package leaflet of the medication to the healthcare professional.

In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or go to a medical center immediately or call the Toxicology Information Service, phone: 91 562 04 20, indicating the medication and the amount ingested.

Medicine questions

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4. Possible side effects

Like all medications, this medication can cause side effects, although not everyone will experience them.

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

  • Gastrointestinal disorders, such as stomach ulcers, intestinal ulcers, gastrointestinal bleeding, abdominal pain, indigestion, heartburn, acidity, gastric discomfort, nausea, and vomiting.
  • Respiratory disorders, such as difficulty breathing (asthma, bronchospasm), nasal congestion, and rhinitis.
  • Urticaria, skin rashes, angioedema (inflammation and swelling that affects the face, lips, mouth, tongue, or throat, which can cause difficulty swallowing or breathing) and itching.
  • Hypoprothrombinemia (coagulation disorder) when administered in high doses.

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

  • Reye's Syndrome in children under 16 years of age with febrile illnesses, flu, or chickenpox (see "Before taking Aspirin").
  • Liver disorders, especially in patients with juvenile arthritis.
  • Anemia.

With prolonged doses of acetylsalicylic acid, the following side effects have been observed, whose frequency cannot be established with precision: dizziness, ringing in the ears, deafness, sweating, headache, confusion, renal insufficiency, and acute interstitial nephritis.

If you notice the appearance of:

  • stomach discomfort or pain, gastrointestinal bleeding or black stools,
  • skin disorders, such as rashes or redness,
  • difficulty breathing,
  • unexpected changes in the amount or appearance of urine,
  • swelling of the face, feet, or legs,
  • deafness, ringing in the ears, or dizziness,

stop taking the medication and consult your doctor immediately, as they may indicate the appearance of side effects that require urgent medical attention.

Reporting side effects

If you experience any type of side effect, consult your doctor or pharmacist, even if it is not listed in this package leaflet. You can also report them directly through the Spanish Medication Surveillance System for Human Use: https://notificaram.es. By reporting side effects, you can contribute to providing more information on the safety of this medication.

5. Storage of Aspirin

Do not store above 25°C.

Keep this medication out of the sight and reach of children.

Do not use this medication after the expiration date shown on the package, after the abbreviation CAD. The expiration date is the last day of the month indicated.

Medications should not be disposed of in wastewater or household waste. Deposit the packages and medications you no longer need in the Sigre Collection Point at the pharmacy. In case of doubt, ask your pharmacist how to dispose of the packages and medications you no longer need. This will help protect the environment.

6. Package Contents and Additional Information

Composition of Aspirin

Each effervescent tablet contains as active ingredient: acetylsalicylic acid, 500 mg. The other components (excipients) are: sodium citrate, sodium hydrogen carbonate, citric acid, and sodium carbonate.

Appearance of Aspirin and package contents

Effervescent tablets are round and white with the Bayer cross logo on one side and Aspirin 0.5 on the other.

They come in packages containing 2, 10, and 20 effervescent tablets. Not all package sizes may be marketed.

Marketing Authorization Holder

Bayer Hispania, S.L.

Av. Baix Llobregat, 3-5

08970 Sant Joan Despí (Barcelona)

Spain

Manufacturer

Bayer Bitterfeld GmbH

OT Greppin

Salegaster Chausee, 1

06803- Bitterfeld-Wolfen (Germany)

Date of last revision of this package leaflet:October 2023

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

Online doctors for ASPIRIN 500 mg EFFERVESCENT TABLETS

Discuss questions about ASPIRIN 500 mg EFFERVESCENT TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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.
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  • 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.

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Svetlana Kolomeeva

Cardiology 18 years exp.

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
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  • Chronic conditions: diabetes, thyroid disorders.
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Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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Maria Martelli

Pain medicine 12 years exp.

Dr Maria Martelli is a medical doctor specialising in anaesthesiology and pain medicine. She provides online consultations for adults, focusing on the assessment and management of acute, chronic, and complex pain conditions, as well as supportive care in serious illness.

She graduated from the Medical University of Silesia in Katowice and completed her specialisation in Anaesthesiology and Intensive Care. Alongside hospital work, she has extensive experience in home and inpatient hospice care, supporting patients with severe pain and advanced disease. Since 2021, she has been a certified specialist and continues to work in anaesthesiology, intensive care, and pain treatment.

Patients consult her for:

  • Chronic pain lasting more than 3 months (musculoskeletal, neuropathic, mixed pain).
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Dr Martelli takes a structured, evidence-based approach, carefully analysing symptoms, previous treatments, and overall health status. Her consultations focus on realistic pain control goals, safety of therapy, and improving daily functioning.

She is especially attentive to patients living with long-term pain or serious illness, providing clear explanations, compassionate guidance, and medically sound recommendations adapted to each individual situation.

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Doctor

Alexander Nazarchuk

Allergology 7 years exp.

Dr. Alexander Nazarchuk is a physician specialising in allergology and internal medicine. He provides online consultations for adults, following the principles of evidence-based medicine — no outdated treatments or unnecessary tests, with clear explanations and a personalised approach. He helps patients with a wide range of allergic and therapeutic conditions, from common day-to-day complaints to complex cases involving allergies, gastrointestinal issues, cardiovascular concerns, respiratory symptoms, and more.

You can consult Dr. Nazarchuk for:

  • Test interpretation and guidance on diagnostic plans.
  • Allergic rhinitis, hay fever, bronchial asthma (including severe cases).
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  • Atopic dermatitis, urticaria, contact allergies.
  • Allergen-specific immunotherapy (AIT) – initiation and ongoing management.
  • Abdominal pain, bloating, changes in bowel habits, nausea, heartburn.
  • High blood pressure and adjustment of baseline antihypertensive therapy.
  • Hyperlipidaemia and elevated cholesterol.
  • Cough, nasal congestion, fever, sore throat.
  • Anaemia, including iron deficiency and related conditions.
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During consultations, Dr. Nazarchuk takes a thorough, structured approach — analysing symptoms, identifying potential causes, and helping patients make informed decisions. Whether treatment, further investigation, or monitoring is needed, he explains each step clearly so you understand your health and how best to manage it.

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Frequently Asked Questions

Is a prescription required for ASPIRIN 500 mg EFFERVESCENT TABLETS?
ASPIRIN 500 mg EFFERVESCENT TABLETS does not require 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 ASPIRIN 500 mg EFFERVESCENT TABLETS?
The active ingredient in ASPIRIN 500 mg EFFERVESCENT TABLETS is acetylsalicylic acid. This information helps identify medicines with the same composition but different brand names.
Who manufactures ASPIRIN 500 mg EFFERVESCENT TABLETS?
ASPIRIN 500 mg EFFERVESCENT TABLETS is manufactured by Bayer Hispania S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of ASPIRIN 500 mg EFFERVESCENT 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 ASPIRIN 500 mg EFFERVESCENT 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 ASPIRIN 500 mg EFFERVESCENT TABLETS?
Other medicines with the same active substance (acetylsalicylic acid) include A.A.S. 500 mg TABLETS, ASPIRIN 500 mg TABLETS, ASPIRIN 500 mg GRANULES. 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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