GNH USA

Europe — EMA

Mercaptopurina Zentiva

GNH USA supplies Mercaptopurina Zentiva (Mercaptopurine), a purine analog antimetabolite for acute lymphoblastic leukemia and inflammatory bowel disease.

Mercaptopurine Monohydrate

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What is Mercaptopurine Monohydrate?

Mercaptopurine, the active ingredient in Mercaptopurina Zentiva, is a purine analog antimetabolite presented as a strength/form for oral use. It treats acute lymphoblastic leukemia and inflammatory bowel disease in both adult and pediatric patients.

GNH USA supplies Mercaptopurina Zentiva as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, oncology centres and pharmacies worldwide.

What is Mercaptopurine Monohydrate used for?

Mercaptopurine acts as a purine analog used in hematologic malignancies and immune‑mediated gastrointestinal disorders. - Acute lymphoblastic leukemia: induces remission and supports long‑term disease control. - Maintenance therapy for leukemia: sustains remission and reduces relapse risk. - Inflammatory bowel disease (Crohn's disease, ulcerative colitis): helps achieve and maintain clinical remission in moderate to severe cases.

What are the side effects of Mercaptopurine Monohydrate?

Adverse reactions may range from mild to severe and require monitoring.

Common Side Effects: - Nausea and vomiting - Loss of appetite - Mild elevation of liver enzymes - Fatigue - Mild infections - Diarrhea

Serious or Rare Side Effects: - Severe bone‑marrow suppression (neutropenia, anemia, thrombocytopenia) - Hepatotoxicity with marked liver injury - Pancreatitis - Life‑threatening hypersensitivity reactions - Secondary malignancies - Severe infections such as sepsis

What precautions apply to Mercaptopurine Monohydrate?

Use of Mercaptopurina Zentiva requires careful clinical oversight. - Monitor blood counts: perform regular CBC to detect myelosuppression. - Assess liver function: periodic LFTs to identify hepatotoxicity. - Adjust dose in renal impairment: reduce dosage when creatinine clearance is decreased. - Avoid in pregnancy: drug is teratogenic (Category D) and should not be used unless essential. - Use effective contraception: both male and female patients must employ reliable birth control. - Store at ambient temperature: keep below 25°C, protect from moisture and light.

What does Mercaptopurine Monohydrate interact with?

Mercaptopurina Zentiva can interact with several medicines, altering efficacy or safety.

Major Interactions (Avoid): - Allopurinol: markedly increases risk of myelosuppression. - Warfarin: potentiates anticoagulant effect, raising bleeding risk. - Live vaccines: heightened risk of infection due to immunosuppression. - Methotrexate: additive bone‑marrow toxicity.

Moderate Interactions (Monitor Closely): - Azathioprine: shared metabolic pathway may increase toxicity. - Rifampin: may reduce mercaptopurine plasma concentrations. - NSAIDs: can affect renal function and increase toxicity risk.

Frequently asked questions

What is Mercaptopurina Zentiva used for?+
Mercaptopurina Zentiva is a generic mercaptopurine product indicated for the treatment of acute lymphoblastic leukemia in children and adults, for maintenance therapy to sustain remission, and for moderate to severe Crohn's disease and ulcerative colitis as an immunosuppressive agent.
How does mercaptopurine work?+
Mercaptopurine is a purine analog that blocks de novo purine synthesis and is incorporated into DNA and RNA. This interferes with nucleic acid formation, causing cytotoxicity in rapidly dividing cells and providing immunosuppression, which underlies its effectiveness in cancer and inflammatory disorders.
What is the usual dose of Mercaptopurina Zentiva?+
The dose is individualized by the prescribing clinician based on disease type, patient age, weight, TPMT activity and laboratory values. Typical regimens range from 50‑100 mg/m² per day for leukemia and 1‑3 mg/kg per day for inflammatory bowel disease, but exact dosing must be set by a qualified health professional.
Is Mercaptopurina Zentiva safe in pregnancy or breastfeeding?+
Mercaptopurine is classified as Pregnancy Category D because it has demonstrated fetal risk and should be avoided unless the benefit clearly outweighs the risk. It is excreted in breast milk and may harm a nursing infant, so breastfeeding is generally not recommended during therapy.
How do I order Mercaptopurina Zentiva from GNH USA?+
Submit an enquiry on the product page at gnh-usa.com, specifying the required quantity. GNH USA works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any temperature requirements) and the necessary import documentation.
How does Mercaptopurina compare with the main alternative drug?+
The primary alternative is azathioprine, another thiopurine. Both are metabolised to 6‑mercaptopurine, but mercaptopurine offers more predictable pharmacokinetics and allows direct dosing. Azathioprine may cause higher gastrointestinal intolerance, while mercaptopurine requires TPMT testing to reduce myelosuppression risk. Choice depends on clinical context and patient tolerance.
What are the storage and handling requirements?+
Mercaptopurina Zentiva should be stored at ambient temperature, below 25 °C, in the original container to protect from moisture and light. Keep the product out of reach of children and do not use if the packaging is damaged or the tablets appear discoloured.
How is Mercaptopurina Zentiva administered?+
The medication is supplied as oral tablets and is taken by mouth with or without food, as directed by the prescriber. Swallow the tablet whole; do not crush or split unless instructed. Adherence to the prescribed schedule and regular monitoring of blood counts are essential for safe use.
What are the most serious risks to watch for?+
The most critical adverse events include severe bone‑marrow suppression leading to neutropenia, anemia or thrombocytopenia, hepatotoxicity with marked liver enzyme elevation, pancreatitis, and rare but life‑threatening hypersensitivity reactions. Patients should promptly report fever, persistent fatigue, jaundice, abdominal pain or any signs of infection.
Who should not use Mercaptopurina Zentiva?+
Contraindications include patients with known hypersensitivity to mercaptopurine, those with severe hepatic impairment, active uncontrolled infections, and pregnant women unless the benefit outweighs the risk. Individuals with deficient TPMT activity are at high risk for toxicity and should avoid the drug or receive dose adjustments under specialist supervision.
Information provided on this page is for educational use by procurement and clinical professionals. Always consult a licensed healthcare provider for medical advice and prescribing decisions. GNH USA supplies this product subject to applicable regulatory and licensing requirements.

Product details

Drug
Mercaptopurine Monohydrate
Route
Oral Use
Manufacturer
Zentiva, K.S.
Origin
EU

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