Product image of Metoject (Methotrexate) supplied by GNH India

Metoject

Active Ingredient:
Methotrexate
Origin:
EU

Metoject (Methotrexate)

Methotrexate, the active ingredient in Metoject, is an antimetabolite (folate antagonist) presented as a subcutaneous formulation for injection use. It is employed to treat autoimmune disorders, certain malignancies and ectopic pregnancy in adult patients.

GNH India supplies Metoject as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Medac Gesellschaft Für Klinische Spezialpräparate Mbh (Wedel)

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Indications & Clinical Uses

Methotrexate is used in several disease categories, primarily as an immunosuppressant and antineoplastic agent.

  • Rheumatoid arthritis: reduces joint inflammation and slows disease progression.
  • Psoriasis: decreases skin lesions and plaque formation.
  • Acute lymphoblastic leukemia: interferes with malignant cell proliferation.
  • Non‑Hodgkin lymphoma: contributes to tumor regression.
  • Ectopic pregnancy: terminates trophoblastic tissue growth.

How It Works

  • Methotrexate inhibits dihydrofolate reductase, blocking the conversion of dihydrofolate to tetrahydrofolate, which is essential for purine and pyrimidine synthesis. This results in reduced DNA, RNA and protein production, limiting cell replication, particularly in rapidly dividing immune and cancer cells. The drug also exerts anti‑inflammatory effects by increasing extracellular adenosine levels.

Side Effects

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

Common Side Effects

  • Nausea and vomiting.
  • Fatigue or malaise.
  • Mouth sores (stomatitis).
  • Elevated liver enzymes.

Serious or Rare Side Effects

  • Severe liver toxicity or fibrosis.
  • Pulmonary fibrosis or interstitial pneumonitis.
  • Bone marrow suppression leading to pancytopenia.

Precautions & Warnings

When using Methotrexate, careful monitoring and specific precautions are recommended to minimize risks.

  • Monitor liver function: perform regular liver enzyme tests.
  • Monitor blood counts: check complete blood count frequently.
  • Avoid use in pregnancy: contraindicated due to teratogenicity.
  • Use effective contraception: both male and female patients must use reliable methods.
  • Adjust dose in renal impairment: reduce dosage or increase monitoring.
  • Store at ambient temperature: keep in original packaging, protect from moisture.

Avoid Interactions

Methotrexate interacts with several medicines that can alter its efficacy or increase toxicity.

Major Interactions (Avoid)

  • NSAIDs: may increase methotrexate toxicity.
  • Trimethoprim: enhances myelosuppression.
  • Live vaccines: risk of severe infection.

Moderate Interactions (Monitor Closely)

  • Phenytoin: reduces methotrexate plasma levels.
  • Oral contraceptives: may decrease contraceptive effectiveness.
  • Azathioprine: additive immunosuppression risk.

Frequently Asked Questions

Metoject, containing methotrexate, is prescribed for several indications including rheumatoid arthritis, moderate to severe plaque psoriasis, acute lymphoblastic leukemia, non‑Hodgkin lymphoma, and ectopic pregnancy. In each case the drug works to suppress abnormal immune activity or to inhibit the growth of malignant cells.

Methotrexate blocks the enzyme dihydrofolate reductase, preventing the formation of tetrahydrofolate needed for DNA, RNA and protein synthesis. This limits the replication of rapidly dividing cells such as activated immune cells and cancer cells. Additionally, it raises extracellular adenosine, which contributes to its anti‑inflammatory properties.

The dose of Metoject is individualized by the prescribing clinician based on the specific indication, patient weight, renal and hepatic function, and response to therapy. Dosage adjustments are made according to laboratory monitoring and clinical assessment, and patients should follow the prescriber’s instructions precisely.

Methotrexate is classified as pregnancy category X because it is known to cause fetal malformations and embryotoxicity. It is contraindicated in pregnancy and women of child‑bearing potential must use effective contraception. Limited data exist for breastfeeding, and the drug is generally avoided due to potential infant exposure.

To order Metoject, submit an enquiry on the product page at gnhindia.com with 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 required) and necessary import documentation.

Compared with biologic DMARDs, methotrexate (Metoject) is a small‑molecule agent that is generally less expensive and administered by subcutaneous injection. It has a well‑established efficacy profile for rheumatoid arthritis and psoriasis, but may require more laboratory monitoring for hepatic and hematologic toxicity.

Metoject should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the product from moisture and direct sunlight. Do not freeze the preparation, and keep it out of reach of children.

Metoject is given by subcutaneous injection, typically into the abdomen or thigh. The injection site should be rotated to reduce local irritation. Administration is performed by a healthcare professional or a trained patient following aseptic technique and the prescriber’s dosing schedule.

The most serious risks include severe liver toxicity or fibrosis, pulmonary fibrosis or interstitial pneumonitis, and bone‑marrow suppression that can lead to pancytopenia. These events are rare but require prompt medical attention and regular monitoring of liver function, lung status and blood counts.

Metoject is contraindicated in pregnant women, patients with severe renal or hepatic impairment, and individuals with known hypersensitivity to methotrexate. It should also be avoided in patients receiving live vaccines or those with uncontrolled infections, unless the prescriber determines the benefits outweigh the risks.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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