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CALTHEK FORTE 1 g TABLETS

CALTHEK FORTE 1 g TABLETS

Ask a doctor about a prescription for CALTHEK FORTE 1 g TABLETS

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 CALTHEK FORTE 1 g TABLETS

Introduction

Package Leaflet: Information for the Patient

Calthek Forte1g tablets

paracetamol

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 exactly.

  • 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 side effects not listed in this package leaflet. See section 4.
  • You should consult a doctor if it worsens or does not improve after 5 days.

Contents of the Package Leaflet:

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

1. What Calthek Forte is and what it is used for

Calthek Forte belongs to the group of medications called analgesics and antipyretics. Calthek Forte is indicated for the treatment of symptoms of moderate pain and fever.

You should consult a doctor if it worsens or does not improve after 3 days with fever or 5 days with pain.

2. What you need to know before taking Calthek Forte

Do not takeCalthek Forte

  • If you are allergic to paracetamol or any of the other components of this medication (listed in section 6).

Warnings and Precautions

  • Do not take more medication than recommended in section 3. How to take Calthek Forte.
  • The simultaneous use of this medication with other medications containing paracetamol, such as flu medications, should be avoided, as high doses can lead to liver damage. Do not use more than one medication containing paracetamol without consulting your doctor.

Consult your doctor or pharmacist before starting to take Calthek Forte.

  • If you have kidney or liver disease.
  • If you habitually consume alcohol (3 or more alcoholic beverages per day). In this case, you may need to take a lower dose of paracetamol and limit its use to shorter periods, as your liver may be affected. Chronic alcoholics should not take more than 2g of paracetamol in 24 hours.
  • If you suffer from dehydration or chronic malnutrition caused, for example, by alcohol abuse, anorexia, or inadequate diet.
  • If you have hemolytic anemia (caused by abnormal breakdown of red blood cells)
  • If you have glucose-6-phosphate dehydrogenase deficiency (enzyme deficiency).
  • If you are asthmatic and sensitive to acetylsalicylic acid.
  • If you are taking other medications that affect the liver.
  • If you are taking other medications that contain paracetamol, as this could cause serious liver damage.
  • If you frequently take pain medications for long periods, as prolonged use can lead to more severe and frequent headaches. In these cases, consult your doctor, but do not increase the dose of analgesic.

The sudden interruption of long-term treatments with high doses of analgesics can produce withdrawal symptoms, such as headache, muscle pain, nervousness, or fatigue, which usually disappear within a few days. If you do not notice improvement, consult your doctor.

Taking higher doses than recommended may cause serious liver damage. Therefore, do not exceed the maximum daily dose indicated in section 3. How to take Calthek Forte. See also the section "If you take more Calthek Forte than you should".

If the pain persists for more than 5 days, the fever for more than 3 days, or the pain or fever worsens or other symptoms appear, you should consult your doctor and reassess the clinical situation.

Children and Adolescents

In children under 15 years of age, consult your doctor or pharmacist, as there are other presentations with doses that are suitable for this group of patients.

During treatment with Calthek Forte, immediately inform your doctor if:

If you have serious illnesses, such as severe kidney failure or sepsis (when bacteria and their toxins circulate in the blood, causing damage to organs), or if you suffer from malnutrition, chronic alcoholism, or are also taking flucloxacillin (an antibiotic). A serious disease called metabolic acidosis (a blood and fluid anomaly) has been reported in patients in these situations when paracetamol is used at regular doses for a prolonged period or when paracetamol is taken with flucloxacillin. The symptoms of metabolic acidosis may include: severe breathing difficulties with deep and rapid breathing, drowsiness, feeling of discomfort (nausea) and vomiting.

Taking Calthek Forte with other medications

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

Paracetamol may interact with the following medications:

  • Medication to prevent blood clots: Oral anticoagulants (acenocoumarol, warfarin)
  • Medications to treat epilepsy: Antiepileptics (lamotrigine, phenytoin, or other hydantoins, phenobarbital, methylphenobarbital, primidone, carbamazepine)
  • Medications to treat tuberculosis: (isoniazid, rifampicin)
  • Medications to treat depression and seizures: Barbiturates (used as hypnotics, sedatives, and anticonvulsants)
  • Medications to lower cholesterol levels in the blood (cholestyramine)
  • Medications used to increase urine elimination (loop diuretics such as furosemide)
  • Medications used to treat gout (probenecid and sulfinpyrazone)
  • Medications used to prevent nausea and vomiting: metoclopramide and domperidone
  • Medications used to treat high blood pressure and heart rhythm disorders (arrhythmias): propranolol.

Do not use with other analgesics (pain-relieving medications) without consulting your doctor.

As a general rule for any medication, it is recommended to systematically inform your doctor or pharmacist if you are being treated with another medication. In the case of treatment with oral anticoagulants, it can be administered occasionally as the analgesic of choice.

Inform your doctor or pharmacist if you are taking:

Flucloxacillin (antibiotic), due to a serious risk of blood and fluid anomaly (called metabolic acidosis) that requires urgent treatment (see section 2).

Interference with analytical tests:

If you are going to undergo any analytical test (including blood tests, urine tests, skin tests that use allergens, etc.), inform your doctor that you are taking this medication, as it may alter the results of these tests.

Taking Calthek Forte with food, drinks, and alcohol

The use of paracetamol in patients who habitually consume alcohol (three or more alcoholic beverages per day: beer, wine, liquor, etc.) may cause liver damage.

Taking this medication with food does not affect its efficacy.

Pregnancy, Breastfeeding, and Fertility

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medication.

Small amounts of paracetamol may appear in breast milk, so it is recommended that you consult your doctor or pharmacist before taking this medication.

Driving and Using Machines

The influence of paracetamol on the ability to drive and use machines is nil or insignificant.

3. How to take Calthek Forte

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

The tablets are administered orally with the help of a glass of liquid, preferably water.

The tablets are scored, which allows them to be broken in half to facilitate swallowing.

High daily doses of paracetamol should be avoided during prolonged periods, as the risk of adverse effects such as liver damage increases.

The administration of this medication is subject to the appearance of pain or fever. As these disappear, treatment should be suspended. If the pain persists for more than 5 days, the fever for more than 3 days, or the pain or fever worsens or other symptoms appear, treatment should be interrupted and your doctor consulted.

The recommended dose is:

Adults and adolescents over 15 years: the usual dose is 1 tablet (1g of paracetamol) 3 times a day. The doses should be spaced at least 4 hours apart. No more than 3 tablets (3g) should be taken in 24 hours.

Patients with liver disease: before taking this medication, they must consult their doctor. They should take the amount of medication prescribed by their doctor with a minimum interval between each dose of 8 hours. They should not take more than 2 grams of paracetamol in 24 hours, divided into 2 doses.

Patients with kidney disease: before taking this medication, they must consult their doctor.

Take a maximum of 500 milligrams per dose.

Due to the dose, 1 gram of paracetamol, the medication is not indicated for this group of patients.

Elderly patients: should consult their doctor.

Use in Children and Adolescents

Do not use in adolescents and children under 15 years.

If you think the action of this medication is too strong or too weak, inform your doctor or pharmacist.

When lower doses of paracetamol are required per dose, other paracetamol presentations that adapt to the required dosing should be used.

If you take more Calthek Forte than you should

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

If you have ingested an overdose, you should go immediately to a medical center, even if you do not notice symptoms, as they often do not appear until 3 days after ingestion of the overdose, even in cases of severe poisoning.

The symptoms of overdose may be: dizziness, vomiting, loss of appetite, yellowing of the skin and eyes (jaundice), and abdominal pain.

Treatment of overdose is more effective if started within 4 hours of ingestion of the medication.

Patients being treated with barbiturates or suffering from chronic alcoholism may be more susceptible to the toxicity of a paracetamol overdose.

If you forget to take Calthek ForteDo not take a double dose to make up for forgotten doses, simply take the forgotten dose when you remember, taking the following doses with the indicated separation between doses (at least 4 hours).

If you have any other doubts about the use of this medication, ask your doctor or pharmacist.

4. Possible Side Effects

Like all medications, Calthek Forte can cause side effects, although not everyone will experience them.

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

  • Blood platelet disorders (coagulation disorders), disorders of blood cell formation in the bone marrow
  • Allergic reactions (hypersensitivity)
  • Depression, confusion, hallucination
  • Tremor, headache
  • Abnormal vision
  • Edema (abnormal accumulation of fluid under the skin)
  • Abdominal pain, stomach or intestinal bleeding, diarrhea, nausea, vomiting
  • Abnormal liver function, liver failure, jaundice (with symptoms such as yellowing of the skin and eyes), liver cell death (necrosis)
  • Skin rash, itching, sweating, urticaria, red spots on the skin, angioedema with symptoms such as swelling of the face, lips, throat, or tongue
  • Dizziness, general malaise, fever, sedation, interaction with other medications
  • Overdose and poisoning

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

  • Blood disorders (reduction in the number of platelets, white blood cells, and neutrophils in the blood, hemolytic anemia)
  • Low blood sugar levels
  • Liver toxicity (liver damage)
  • Cloudy urine and kidney disorders
  • Severe allergic reactions that require treatment interruption

Side effects of unknown frequency (cannot be estimated from available data):

Necrolysis (potentially fatal skin disorder), erythema multiforme (allergic reaction or skin infection), Stevens-Johnson syndrome (potentially fatal severe skin disorder), fluid accumulation in the larynx, anaphylactic shock (severe allergic reaction), anemia (reduction in red blood cells), liver alteration and hepatitis (liver inflammation), kidney disorders (severe kidney failure, blood in urine, inability to urinate), stomach and intestine disorders, vertigo.

A serious disease that can make the blood more acidic (called metabolic acidosis) in patients with serious illness using paracetamol (see section 2).

Reporting Side Effects

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

5. Storage of Calthek Forte

No special storage conditions are required.

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

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

Medications should not be disposed of through wastewater or household waste. Deposit the packaging and medications you no longer need at the SIGRE collection point in your pharmacy. If in doubt, ask your pharmacist how to dispose of the packaging and medications you no longer need. This will help protect the environment.

6. Package Contents and Additional Information

Calthek Forte Composition

  • The active ingredient is paracetamol.
  • The other ingredients are: pregelatinized cornstarch, stearic acid, povidone, crospovidone, microcrystalline cellulose, and vegetable magnesium stearate.

Product Appearance and Package Contents

Oblong tablets, white in color, and scored on one side, packaged in blisters.

This medication is available in packages of 10 tablets.

Marketing Authorization Holder

Apotheke Laboratorios, S.L.

Paseo de la Castellana 40, 8th floor

28046 - Madrid

Spain

Manufacturer

Toll Manufacturing Services, S.A.

c/ Aragoneses 2, 28108 Alcobendas

Madrid

or

Ferrer Internacional, S.A.

c/ Joan Buscalla, 1-9

08173 Sant Cugat del Vallès (Barcelona) Spain

or

Pharmaloop, S.L.

c/ Bolivia 15, Pol. Ind. Azque

28806 Alcalá de Henares (Madrid)

Spain

Date of the last revision of this package leaflet: March 2025

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/

Alternatives to CALTHEK FORTE 1 g TABLETS in other countries

The best alternatives with the same active ingredient and therapeutic effect.

Alternative to CALTHEK FORTE 1 g TABLETS in Poland

Dosage form: Solution, 10 mg/ml
Active substance: paracetamol
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Prescription required
Dosage form: Suppositories, 80 mg
Active substance: paracetamol
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Dosage form: Tablets, 500 mg
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Dosage form: Tablets, 1 g
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Prescription not required
Dosage form: Tablets, 1 g
Active substance: paracetamol
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Alternative to CALTHEK FORTE 1 g TABLETS in Ukraine

Dosage form: solution, 10 mg/ml; 50 ml or 100 ml in a vial
Active substance: paracetamol
Manufacturer: AT "Farmak
Prescription required
Dosage form: solution, 10 mg/ml, 100 ml in a vial
Active substance: paracetamol
Manufacturer: Mefar Ilac San. A.S.
Prescription required
Dosage form: tablets, 500 mg
Active substance: paracetamol
Manufacturer: KUSUM HELTHKER PVT LTD
Prescription not required
Dosage form: tablets, 500mg
Active substance: paracetamol
Manufacturer: TOV "KUSUM FARM
Prescription not required
Dosage form: suspension, 120mg/5ml
Active substance: paracetamol
Manufacturer: TOV "KUSUM FARM
Prescription not required
Dosage form: tablets, 500 mg in 2 tablets per strip
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Online doctors for CALTHEK FORTE 1 g TABLETS

Discuss dosage, side effects, interactions, contraindications, and prescription renewal for CALTHEK FORTE 1 g TABLETS – subject to medical assessment and local rules.

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Antonio Cayatte

General medicine44 years of experience

Dr Antonio Cayatte is a physician in General and Acute Medicine with over 30 years of experience across clinical care, medical research, and education. He offers online consultations for adults with a wide range of symptoms, both acute and chronic.

His clinical background includes:

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Dr Cayatte earned his degree from the University of Lisbon and taught internal medicine at Boston University School of Medicine. He holds active medical registrations in both Portugal and the UK and is a Fellow of the American Heart Association.

Consultations are available in English and Portuguese. Patients value his clarity, professionalism, and balanced approach to evidence-based care.

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Doctor

Andrei Popov

General medicine7 years of experience

Dr. Andrei Popov is a licensed pain management specialist and general practitioner based in Spain. He provides expert online care for adults dealing with both chronic and acute pain, as well as a wide range of everyday health concerns.

He specialises in diagnosing and treating pain conditions that affect quality of life, including:

  • Chronic pain lasting more than 3 months.
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In addition to pain management, Dr. Popov helps patients with:
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Online consultations last up to 30 minutes and include a detailed symptom review, personalised treatment planning, and medical follow-up when needed.

Dr. Popov’s approach is rooted in evidence-based medicine, combined with individualised care tailored to each patient’s history, lifestyle, and clinical needs.

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