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DARAPRIM 25 mg TABLETS

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About the medicine

How to use DARAPRIM 25 mg 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

Daraprim 25 mg Tablets

Pyrimethamine

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 Package Leaflet

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

1. What is Daraprim and what is it used for

Daraprim contains pyrimethamine, which belongs to a group of medicines called antimalarials. It is indicated in adults and children for the treatment of uncomplicated malaria caused by sensitive strains of Plasmodium falciparum.

Daraprim in combination with a sulfonamide is indicated for the treatment of congenital and acquired toxoplasmosis.

Pyrimethamine should not be used as monotherapy in the treatment of malaria and toxoplasmosis.

Doctor consultation

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2. What you need to know before you take Daraprim

Do not take Daraprim

  • if you are allergic to the active substance or to any of the other ingredients of this medicine listed in section 6.

Warnings and precautions

  • if you have a type of anemia called megaloblastic anemia or symptoms of malnutrition, as pyrimethamine may exacerbate the folate deficiency associated with this type of anemia. Accordingly, these individuals should receive a folinic acid supplement.
  • if you have a history of seizures; in these patients, high initial doses of pyrimethamine should be avoided.

When pyrimethamine is administered with a sulfonamide, the general precautions applicable to sulfonamides should be taken into account. In any case, adequate fluid intake should be ensured to minimize the risk of crystalluria.

Use of Daraprim with other medicines

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

In particular, pyrimethamine may alter the effect of the following medicines: antibiotics such as cotrimoxazole or trimethoprim, antimalarials such as proguanil, antivirals such as zidovudine, or cytostatic agents (such as methotrexate). Concomitant administration with a trimethoprim/sulfamethoxazole combination may develop megaloblastic anemia.

Concomitant administration of lorazepam (benzodiazepine) and pyrimethamine may induce mild liver damage.

Cases of total or partial disappearance of the cells normally found in the bone marrow (fatal bone marrow aplasia) have been associated with the administration of the antibiotic daunorubicin and pyrimethamine to individuals suffering from a type of white blood cell cancer known as acute myeloid leukemia.

Anti-acid salts and the anti-diarrheal agent kaolin reduce the absorption of pyrimethamine.

Pyrimethamine may affect the efficacy or toxicity of drugs such as the antimalarial quinine or anticoagulants such as warfarin if administered concomitantly.

Pregnancy, breastfeeding, and fertility

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.

Daraprim is only recommended in combination therapy with sulfonamide during the second and third trimester of pregnancy. In the first trimester, alternative therapy is recommended.

Concomitant administration of calcium folinate is recommended if Daraprim is administered during pregnancy.

Pyrimethamine passes into breast milk, so its use is not recommended during breastfeeding, unless your doctor considers it necessary.

Driving and using machines

No effects on the ability to drive or use machines have been observed with Daraprim.

Daraprim 25 mg Tablets contain lactose and sodium

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

This medicine contains less than 23 mg of sodium (1 mmol) per tablet; this is essentially "sodium-free".

3. How to take Daraprim

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

Remember to take your medicine.

Your doctor will tell you if you should increase or reduce the dose of the medicine during the treatment period, as well as the duration of the treatment.

Daraprim is a tablet for oral administration. It should be taken in the morning or at night, with or without food. The tablets should be swallowed without chewing with the help of a little liquid (a glass of water).

All patients receiving pyrimethamine should receive a folinic acid supplement to reduce the risk of bone marrow affection.

Malaria treatment:

Daraprim should be administered in a single dose concomitantly with sulfadiazine and another antimalarial.

Adults:

A single dose of two to three Daraprim tablets (50 to 75 mg of pyrimethamine), together with 1,000 mg to 1,500 mg of sulfadiazine.

In general, a higher dose should be administered to adults weighing more than 60 kg.

Use in children:

Pyrimethamine can be used orally with sulfadoxine/sulfadiazine in children from 2 months of age.

The following dosage is recommended based on body weight:

  • Children from 5 to 10 kg: 12.5 mg of pyrimethamine in a single dose.
  • Children from 11 to 20 kg: 25 mg of pyrimethamine in a single dose.
  • Children from 21 to 30 kg: 37.5 mg of pyrimethamine in a single dose.
  • Children from 31 to 45 kg: 50 mg of pyrimethamine in a single dose.
  • Children over 45 kg: use the same dose as for adults.

Use in elderly patients:

There is no information on the effect of Daraprim in elderly patients. At the recommended doses for malaria, it is unlikely that pyrimethamine will have adverse effects in elderly people.

Toxoplasmosis treatment

Daraprim should be administered concomitantly with sulfadiazine or clindamycin. The use of an alternative sulfonamide may require a dose adjustment.

Immunocompetent adults:

Pyrimethamine: An initial dose of four tablets (100 mg of pyrimethamine) followed by a dose of one to two tablets daily (25 to 50 mg per day of pyrimethamine).

Immunodeficient adults:

Daraprim should be administered concomitantly with sulfadiazine or clindamycin.

  • < 60 kg: pyrimethamine 200 mg orally as a loading dose, continue with 50 mg per day.
  • ≥ 60 kg: pyrimethamine 200 mg orally as a loading dose, followed by 75 mg per day.

Subsequently, the secondary prophylaxis regimen will be administered.

Use in children:

In the treatment of toxoplasmosis, the following dosage regimens are recommended:

  • Children under 3 months (congenital toxoplasmosis): for the treatment of congenital toxoplasmosis, it is recommended that newborns receive pyrimethamine 2 mg/kg/day for 2 days; 1 mg/kg/day for 2-6 months, and then 1 mg/kg/day three times a week until completing 12 months of treatment.
  • Children from 3 to 9 months: 6.25 mg daily of pyrimethamine together with sulfadiazine: 100 mg/kg body weight (maximum 1 g) per day in four divided doses.
  • Children from 10 months to 2 years: 1 mg/kg body weight/day of pyrimethamine together with 150 mg/kg body weight of sulfadiazine (maximum 1.5 g) per day in four divided doses.
  • Children from 3 to 6 years: a loading dose of pyrimethamine 2 mg/kg body weight (up to a maximum of 50 mg) followed by a dose of 1 mg/kg/day (maximum dose of 25 mg); together with 150 mg/kg body weight of sulfadiazine (maximum 2 g) per day in four divided doses.
  • Children over 6 years: the same as for adults.

Use in immunodepressed children:

Dosage regimens are not defined. As a general guideline, refer to the dosage regimens indicated in children with toxoplasmosis infections.

Use in elderly patients:

There is no information on the effect of Daraprim in elderly patients. In theory, it is possible that such patients under treatment for toxoplasmosis may be more susceptible to bone marrow affection caused by folate deficiency associated with daily administration of Daraprim.

Use during pregnancy:

25 mg per day until delivery.

If you take more Daraprim than you should

If you have taken more Daraprim than you should, contact your doctor or pharmacist immediately. The most frequent symptoms in case of acute overdose are: vomiting and convulsions. Ataxia, tremor, and respiratory depression may also occur.

In case of overdose or accidental ingestion, contact your doctor or pharmacist immediately or call the Toxicological Information Service, telephone 91 562 04 20, indicating the medicine and the amount ingested.

If you forget to take Daraprim

Do not take a double dose to make up for forgotten doses. Take the next dose when it is due.

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?

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4. Possible side effects

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

Symptoms to which you must pay attention

Bone marrow damage(bone marrow failure to produce blood cells)

This increases the risk of bleeding and reduces your ability to fight infections. The symptoms include:

  • unexplained bleeding or bruising
  • fever
  • sore throat
  • mouth ulcers
  • extreme pallor or weakness

Tell your doctor as soon as possible if you have any of these symptoms – either for the first time or if they worsen.

Adverse effects observed are classified according to their frequency of occurrence in: very common (may affect more than 1 in 10 people), common (may affect up to 1 in 10 people), uncommon (may affect up to 1 in 100 people), rare (may affect up to 1 in 1,000 people), very rare (may affect up to 1 in 10,000 people):

Very common adverse effects

May affect more than 1 in 10patients:

  • headache
  • vomiting, nausea, diarrhea
  • skin rash

Very common adverse effects that may appear in blood tests:

  • anemia (reduction in the number of red blood cells)

Common adverse effects

May affect up to 1 in 10patients:

  • dizziness

Common adverse effects that may appear in blood tests are:

  • leukopenia (reduction in the number of white blood cells)
  • thrombocytopenia (reduction in the number of platelets)

Daily therapeutic doses of pyrimethamine have been shown to depress hematopoiesis (formation of blood cells) in 25-50% of patients. The probability of inducing leukopenia, anemia, or thrombocytopenia is reduced by concomitant administration of calcium folinate.

Uncommon adverse effects

May affect up to 1 in 100patients:

  • fever
  • abnormal skin pigmentation

Very rare adverse effects

May affect up to 1 in 10,000patients:

  • colic
  • seizures

Seizures have been observed predominantly in patients treated for toxoplasmosis.

  • mouth ulcers
  • pneumonia with cellular and eosinophilic infiltration

Observed when pyrimethamine is administered once a week in combination with sulfadoxine.

  • dermatitis.

The very rare adverse effects that may appear in blood tests are:

  • pancytopenia (reduction in the number of all types of blood cells)

Pancytopenia, in response to folates, has been observed in patients with a probable pre-existing folate deficiency. Deaths have occurred in the absence of folate treatment.

If you experience any side effect, contact your doctor or pharmacist. This includes any possible side effects not listed in this leaflet.

Reporting of side effects

If you experience any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly to the Spanish Medicines and Health Products Agency (AEMPS) at http://www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Daraprim

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

Do not store above 25°C. Store protected from light.

Do not use this medicine after the expiry date (EXP) stated on the packaging. The expiry date is the last day of the month indicated.

Medicines should not be disposed of via wastewater or household waste. Return the packaging and any unused medicine to a pharmacy. If you are unsure, 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 other information

Composition of Daraprim

  • The active substance is pyrimethamine. Each tablet contains 25 mg of pyrimethamine.
  • The other ingredients (excipients) are: lactose monohydrate, corn starch, hydrolyzed corn starch, sodium docusate, and magnesium stearate.

Appearance of the product and contents of the pack

Daraprim is a white, biconvex, scored, and engraved tablet with an identification code. It is available in packs of 30 tablets.

Marketing authorization holder and manufacturer

Marketing authorization holder

SmithKline Beecham Farma, S.A.

P.T.M. C/ Severo Ochoa, 2

28760 Tres Cantos (Madrid)

Tel: +34 900 202 700

[email protected]

Manufacturer

GlaxoSmithKline Trading Services Limited

12 Riverwalk

Citywest Business Campus

Dublin 24

Ireland

Date of the last revision of this leaflet:October 2020.

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/.

Daraprim is packaged in a child-resistant blister pack.

How to remove a tablet

  1. Separate a tablet: pull along the pre-cut line to separate a blister from the pack.

Hands holding and separating a sheet with grid marks and a black arrow indicating direction

  1. Remove the outer layer: starting from the corner, lift and remove the outer layer of the blister.

Two fingers holding an injection device with a black arrow indicating the direction of application

  1. Press to remove the tablet: press on one side of the tablet to remove it from the aluminum foil.

Hand holding a gray medicinal patch with a circular opening and a black arrow indicating its application on the skin

Online doctors for DARAPRIM 25 mg TABLETS

Discuss questions about DARAPRIM 25 mg TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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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.
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€58
5.0 (5)
Doctor

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. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

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€80
5.0 (1056)
Doctor

Andrei Popov

General medicine 7 years exp.

Dr. Andrei Popov is a family physician with specialized training in the management of chronic pain. He provides video consultations for adults in Spain and across Europe: whether you have been living with pain for months that no one has been able to properly explain, or you need to resolve a health issue without waiting weeks for an appointment.

His approach is clear: to listen, organize your case, and provide you with a practical roadmap based on evidence-based medicine and adapted to your medical history and personal needs.

Pain: how he can help

  • Chronic pain (more than 3 months
  • Migraine and recurrent or high-intensity headaches
  •  Neck, lower back, back and joint pain
  •  Post-traumatic pain after injuries or surgeries
  •  Pain of neurological origin: neuralgia, neuropathic pain, fibromyalgia

General medicine

  • Frequent respiratory infections (cold, flu, persistent cough)
  • Hypertension, diabetes and metabolic disorders
  • Review of laboratory tests and MRI/CT reports (explained in clear language)
  • Preventive medicine and health monitoring
  • Second opinions and treatment adjustments (when clinically appropriate)

What the consultation is like
 Each session lasts up to 30 minutes. We review symptoms, medical history, medications and any tests you provide, and you finish the consultation with a clear treatment plan, defined next steps, and criteria to understand when follow-up may be needed. If warning signs are detected, he will clearly advise whether you need in-person care or urgent medical attention.

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€80
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Doctor

Joao Silva

General medicine 6 years exp.

Dr. João Silva is a physician with training and experience in the field of General and Family Medicine, dedicated to providing healthcare focused on the well-being and quality of life of his patients. Throughout his professional career, he has developed broad clinical competencies, striving to maintain a medical practice based on scientific evidence and continuous knowledge updates.

Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

Subsequently, between January 2021 and December 2021, he completed the General Internship at the Entre Douro e Vouga Hospital Center in Santa Maria da Feira, where he had the opportunity to work in different hospital settings and deepen his competencies in several areas of medicine.

From January 2022 until March 2026, he works as a Resident Physician in General and Family Medicine at USF Salvador Machado in Oliveira de Azeméis, developing clinical activities in primary healthcare, follow-up of chronic patients, and health promotion in the community.

Complementing his medical training, Dr. João Silva also completed a Postgraduate Degree in Continuing and Palliative Care at CESPU, strengthening his preparation in the comprehensive approach to patient care, especially in situations requiring prolonged care and multidisciplinary support.

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€55

Frequently Asked Questions

Is a prescription required for DARAPRIM 25 mg TABLETS?
DARAPRIM 25 mg 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 DARAPRIM 25 mg TABLETS?
The active ingredient in DARAPRIM 25 mg TABLETS is pyrimethamine. This information helps identify medicines with the same composition but different brand names.
How much does DARAPRIM 25 mg TABLETS cost in pharmacies?
The average pharmacy price for DARAPRIM 25 mg TABLETS is around 4.9 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures DARAPRIM 25 mg TABLETS?
DARAPRIM 25 mg TABLETS is manufactured by Smithkline Beecham Farma S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of DARAPRIM 25 mg 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 DARAPRIM 25 mg 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 DARAPRIM 25 mg TABLETS?
Other medicines with the same active substance (pyrimethamine) include ARTESUNATE AMIVAS 110 mg POWDER AND SOLVENT FOR INJECTABLE SOLUTION, ATOVACUONE/PROGUANIL HYDROCHLORIDE VIATRIS 250 mg/100 mg FILM-COATED TABLETS, DOLQUINE 200 mg FILM-COATED 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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