Product image of Mtx (Methotrexate) supplied by GNH India

Mtx

Active Ingredient:
Methotrexate
Origin:
EU

Mtx (Methotrexate)

Methotrexate, the active ingredient in Mtx, is an antimetabolite presented as a sterile injectable solution for intramuscular, intravenous, and subcutaneous use. It is employed to treat autoimmune disorders and certain malignancies in adult and pediatric patients.
GNH India supplies Mtx as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres and pharmacies worldwide.

Manufacturer / TM Owner

Hexal Ag

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Indications & Clinical Uses

Methotrexate is used across several disease families, primarily autoimmune and oncologic conditions.

  • Rheumatoid arthritis: reduces joint inflammation and slows disease progression.
  • Psoriasis: decreases skin cell proliferation and improves plaque lesions.
  • Acute lymphoblastic leukemia: interferes with malignant cell replication to achieve remission.
  • Non‑Hodgkin lymphoma: inhibits tumor growth as part of combination chemotherapy.
  • Gestational trophoblastic disease: promotes resolution of abnormal trophoblastic tissue.

How It Works

  • Methotrexate inhibits dihydrofolate reductase, preventing the conversion of dihydrofolate to tetrahydrofolate. This blockade reduces the synthesis of purine nucleotides and thymidylate, leading to impaired DNA synthesis, cell replication, and ultimately the suppression of rapidly dividing immune and cancer cells.

Side Effects

Methotrexate may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

  • Nausea and vomiting: gastrointestinal upset occurring shortly after administration.
  • Fatigue: persistent tiredness that may affect daily activities.
  • Oral mucositis: painful sores or ulceration of the mouth lining.
  • Elevated liver enzymes: mild, transient increases in hepatic transaminases.

Serious or Rare Side Effects

  • Severe hepatotoxicity: significant liver injury requiring monitoring or discontinuation.
  • Pulmonary fibrosis: progressive lung scarring presenting with cough and dyspnea.
  • Bone marrow suppression: marked decrease in blood cell counts leading to anemia, infection risk, or bleeding.

Precautions & Warnings

Methotrexate therapy requires careful monitoring and patient education.

  • Liver function monitoring: perform baseline and periodic liver enzyme tests.
  • Hematologic surveillance: regularly assess complete blood counts for signs of suppression.
  • Pregnancy avoidance: contraindicated in pregnancy due to teratogenic risk; use effective contraception.
  • Folic acid supplementation: co‑administer to reduce mucosal and hematologic toxicity.
  • Renal dose adjustment: modify dosing in patients with impaired renal clearance.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake the product.

Avoid Interactions

Methotrexate interacts with several medicines, influencing efficacy and safety.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase methotrexate toxicity.
  • Penicillins and other β‑lactam antibiotics: may potentiate bone marrow suppression.
  • Sulfonamide antibiotics: elevate risk of severe hematologic effects.
  • Live vaccines: heightened risk of infection due to immunosuppression.
  • Azathioprine or other immunosuppressants: additive bone marrow depression.

Moderate Interactions (Monitor Closely)

  • Warfarin: methotrexate can enhance anticoagulant effect, requiring INR monitoring.
  • Oral contraceptives: may reduce contraceptive efficacy, necessitating backup methods.
  • Allopurinol: can increase methotrexate plasma levels, prompting dose review.

Frequently Asked Questions

Mtx (Methotrexate) is prescribed for autoimmune diseases such as rheumatoid arthritis and psoriasis, as well as for certain cancers including acute lymphoblastic leukemia, non‑Hodgkin lymphoma, and gestational trophoblastic disease. It works by limiting cell proliferation in both immune and malignant cells.

Methotrexate blocks the enzyme dihydrofolate reductase, which is essential for converting folate into its active form. This inhibition reduces the production of nucleotides needed for DNA synthesis, thereby slowing the growth of rapidly dividing cells in the immune system and tumors.

The specific dose of methotrexate is determined by the prescribing clinician based on the patient’s condition, weight, renal function, and treatment goals. Dosage regimens vary widely between indications and are individualized for safety and effectiveness.

Methotrexate is classified as contraindicated in pregnancy because it can cause fetal malformations and miscarriage. Women of child‑bearing potential should use reliable contraception. Limited data exist for breastfeeding, and the drug is generally avoided due to potential infant exposure.

To order Mtx, 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 (including cold‑chain if needed) and necessary import documentation.

Methotrexate is often considered a first‑line disease‑modifying antirheumatic drug (DMARD) because of its proven efficacy, oral and injectable options, and cost‑effectiveness. Compared with biologic agents, it has a broader safety record but may require folic acid supplementation and regular laboratory monitoring.

Mtx should be stored at 2‑8 °C in a refrigerator, protected from light. The product must not be frozen or shaken. Maintaining the cold‑chain ensures stability and potency of the injectable solution.

Mtx is given by a healthcare professional via intramuscular, intravenous, or subcutaneous injection, depending on the formulation and clinical indication. The route, volume, and frequency are prescribed by the treating physician and administered under aseptic conditions.

Serious risks include severe liver toxicity, pulmonary fibrosis, profound bone‑marrow suppression leading to anemia or infection, and renal failure. Patients should be monitored regularly for liver enzymes, blood counts, and renal function, and any signs of respiratory distress or unusual bleeding require immediate medical attention.

Methotrexate is contraindicated in pregnant women, individuals with severe liver disease, uncontrolled infections, or known hypersensitivity to the drug. Caution is also advised for patients with impaired renal function, existing blood‑cell disorders, or those receiving other myelosuppressive agents.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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