Product image of Ledertrexate (Methotrexate Disodium) supplied by GNH India

Ledertrexate

Active Ingredient:
Methotrexate Disodium
Origin:
EU

Ledertrexate (Methotrexate Disodium)

Methotrexate Disodium, the active ingredient in Ledertrexate, is an antimetabolite (folate antagonist) presented as a sterile injectable solution for intraarterial, intracardiac and intramuscular use. It treats rheumatoid arthritis, psoriasis, selected malignancies and ectopic pregnancy in appropriately selected patients.

GNH India supplies Ledertrexate as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres and pharmacies worldwide.

Manufacturer / TM Owner

Pfizer S.A.

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Indications & Clinical Uses

Ledertrexate, a folate‑antagonist antimetabolite, is employed across several disease families where rapid cell proliferation is a hallmark.

  • Rheumatoid arthritis: reduces joint inflammation and slows structural damage.
  • Psoriasis: improves skin lesions and decreases scaling.
  • Acute lymphoblastic leukemia: induces remission by inhibiting malignant lymphoblast proliferation.
  • Lymphoma: contributes to tumor control and disease stabilization.
  • Ectopic pregnancy: terminates trophoblastic tissue to prevent complications.

How It Works

  • Methotrexate Disodium inhibits dihydrofolate reductase, preventing the conversion of dihydrofolate to tetrahydrofolate. This blocks the synthesis of purine nucleotides and thymidylate, impairing DNA, RNA and protein production in rapidly dividing cells, which underlies its antineoplastic and immunosuppressive actions.

Side Effects

Adverse reactions vary with dose, route and patient factors.

Common Side Effects

  • Nausea or vomiting.
  • Fatigue or malaise.
  • Oral mucosal ulceration.
  • Mild elevation of liver enzymes.

Serious or Rare Side Effects

  • Severe hepatic toxicity or fibrosis.
  • Pulmonary fibrosis or interstitial pneumonitis.
  • Bone marrow suppression leading to pancytopenia.
  • Acute renal failure or nephrotoxicity.
  • Anaphylactic or severe hypersensitivity reactions.
  • Life‑threatening infections due to immunosuppression.

Precautions & Warnings

Careful monitoring and patient education are essential when using Ledertrexate.

  • Liver function monitoring: perform baseline and periodic liver enzyme tests.
  • Hematologic monitoring: check complete blood counts regularly.
  • Pregnancy avoidance: contraindicated in pregnancy; ensure effective contraception.
  • Renal function assessment: adjust dose in patients with impaired clearance.
  • Drug‑specific counseling: advise patients to report signs of infection or respiratory difficulty promptly.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze.

Avoid Interactions

Methotrexate Disodium has several clinically relevant drug interactions.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase methotrexate toxicity.
  • Sulfonamide antibiotics: potentiate hematologic suppression.
  • Live attenuated vaccines: risk of severe infection.
  • Trimethoprim‑sulfamethoxazole: additive bone‑marrow suppression.

Moderate Interactions (Monitor Closely)

  • Azathioprine or other immunosuppressants: enhanced immunosuppression.
  • Cyclosporine: may increase methotrexate levels.
  • Warfarin: potential for increased anticoagulant effect.
  • Oral contraceptives: may reduce methotrexate efficacy.

Frequently Asked Questions

Ledertrexate, containing methotrexate disodium, is prescribed for rheumatoid arthritis, moderate to severe plaque psoriasis, certain hematologic malignancies such as acute lymphoblastic leukemia and lymphoma, and for medical management of ectopic pregnancy when surgery is not indicated.

Methotrexate disodium blocks the enzyme dihydrofolate reductase, halting the production of tetrahydrofolate. This disrupts synthesis of DNA, RNA and proteins, especially in rapidly dividing cells, which reduces inflammation in autoimmune disease and limits tumor cell growth.

The specific dose of Ledertrexate is determined by the prescribing clinician based on the patient’s condition, weight, renal function and treatment goals. Dosage regimens vary widely across indications and must be individualized.

Ledertrexate is classified as Pregnancy Category X, meaning it is contraindicated in pregnancy due to a high risk of fetal harm. It is also not recommended while breastfeeding because it can be excreted in milk and affect the infant.

To request Ledertrexate, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Ledertrexate’s active ingredient, methotrexate, is the most widely used folate antagonist. Compared with newer agents such as leflunomide or biologic DMARDs, methotrexate offers a well‑established efficacy profile, lower cost, and extensive clinical experience, though it requires careful monitoring for toxicity.

Ledertrexate should be stored at 2‑8 °C in a refrigerator, protected from light and moisture. Do not freeze the product, and keep it in the original packaging until ready for use to maintain stability.

Ledertrexate is supplied as a sterile injectable solution and is given by intra‑arterial, intracardiac or intramuscular injection according to the prescribing physician’s instructions. Administration is performed by qualified healthcare professionals in a clinical setting.

The most serious risks include severe liver toxicity, pulmonary fibrosis, profound bone‑marrow suppression leading to pancytopenia, acute renal failure, and life‑threatening infections. Patients should be monitored regularly for signs of these complications.

Ledertrexate is contraindicated in pregnant women, individuals with severe hepatic or renal impairment, patients with known hypersensitivity to methotrexate, and those receiving live vaccines. Caution is also advised for patients with pre‑existing blood dyscrasias or uncontrolled infections.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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