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 manage autoimmune conditions such as rheumatoid arthritis and psoriasis, as well as certain cancers including acute lymphoblastic leukemia and osteosarcoma.

GNH India supplies Metoject as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide. The company adheres to stringent quality standards and provides regulatory documentation to support global distribution.

Manufacturer / TM Owner

Medac Gesellschaft Für Klinische Spezialpräparate Mbh (Wedel)

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Indications & Clinical Uses

Methotrexate is used in autoimmune and oncologic disease pathways to modify disease activity and control cell proliferation.

  • Rheumatoid arthritis: reduces joint inflammation and slows structural damage.
  • Psoriasis: decreases skin lesion severity and plaque formation.
  • Acute lymphoblastic leukemia: interferes with malignant cell replication to achieve remission.
  • Osteosarcoma: inhibits tumor growth as part of multi‑agent chemotherapy.

How It Works

  • Methotrexate inhibits the enzyme dihydrofolate reductase, preventing conversion of dihydrofolate to tetrahydrofolate, a cofactor required for synthesis of purine nucleotides and thymidylate. This blockade reduces DNA, RNA and protein synthesis, particularly affecting rapidly dividing cells such as activated lymphocytes and malignant tumor cells, thereby exerting immunosuppressive and antineoplastic effects. The drug also impedes folate‑dependent enzymes involved in methylation reactions, contributing further to its cytostatic activity.

Side Effects

Methotrexate may be associated with a range of adverse reactions, varying in frequency and severity.

Common Side Effects

  • Nausea and vomiting: gastrointestinal upset occurring in many patients.
  • Fatigue: persistent tiredness or reduced energy.
  • Mouth sores: ulceration of oral mucosa.
  • Elevated liver enzymes: mild hepatic enzyme rise.
  • Low blood cell counts: mild anemia, leukopenia or thrombocytopenia.

Serious or Rare Side Effects

  • Severe liver toxicity: potential for hepatitis or fibrosis.
  • Pulmonary toxicity: interstitial pneumonitis or fibrosis.
  • Renal impairment: reduced kidney function.
  • Severe bone marrow suppression: pancytopenia.
  • Opportunistic infections: due to immunosuppression.

Precautions & Warnings

When prescribing methotrexate, clinicians should observe several safety precautions to minimize risks.

  • Baseline assessment: obtain liver function tests, renal function and complete blood count before initiation.
  • Monitoring: repeat laboratory evaluations regularly to detect toxicity early.
  • Contraindications: avoid in patients with severe hepatic disease or active infections.
  • Pregnancy risk: discontinue in women planning conception and use effective contraception.
  • Drug interactions: review concomitant medications that may increase toxicity.
  • Store at ambient temperature: keep in original container, protect from moisture and light.

Avoid Interactions

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

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): can reduce renal clearance and raise methotrexate levels.
  • Proton pump inhibitors: may impair renal elimination.
  • Penicillins (e.g., ampicillin): can decrease methotrexate excretion.

Moderate Interactions (Monitor Closely)

  • Sulfonamides and trimethoprim: may enhance myelosuppression.
  • Live vaccines: increased risk of infection due to immunosuppression.
  • Alcohol: can exacerbate liver toxicity.

Frequently Asked Questions

Metoject contains methotrexate and is prescribed for several conditions, including rheumatoid arthritis, psoriasis, acute lymphoblastic leukemia and osteosarcoma. In autoimmune diseases it helps control inflammation, while in oncology it is part of chemotherapy regimens aimed at limiting tumor cell growth.

Methotrexate blocks the enzyme dihydrofolate reductase, which is essential for converting folate into its active form. This interruption reduces the synthesis of DNA, RNA and proteins, especially in rapidly dividing cells such as immune‑active lymphocytes and cancer cells, thereby providing immunosuppressive and antineoplastic effects.

The dose of Metoject is individualized by the prescribing clinician based on the specific indication, disease severity, patient weight, renal and hepatic function, and response to therapy. No fixed dosing schedule is provided here; the prescriber sets the appropriate regimen.

Methotrexate is generally contraindicated in pregnancy because it can cause fetal malformations and miscarriage. Women of child‑bearing potential should use effective contraception while on therapy. Breastfeeding is also discouraged, as the drug can be excreted in milk. Consultation with a healthcare professional is essential.

To request Metoject, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, and will verify trade or institutional credentials before providing pricing, availability, shipping details (including cold‑chain if needed) and import documentation.

Metoject (methotrexate) is a folate antagonist, differing from biologic agents that target specific cytokines. It is often less expensive and can be used as a first‑line disease‑modifying drug, but it requires regular laboratory monitoring for toxicity. Biologics may have a more targeted safety profile but are typically higher‑cost options.

Metoject should be stored at ambient temperature, below 25 °C, in its original packaging to protect it from moisture and light. Do not freeze the product. Follow standard aseptic techniques when preparing the subcutaneous injection to maintain sterility.

Metoject is given by subcutaneous injection, usually into the abdomen or thigh. The injection site should be rotated to reduce local irritation. Administration is performed by a qualified healthcare professional or a trained patient following proper aseptic technique and dosage instructions from the prescriber.

Serious adverse events include severe liver toxicity, pulmonary fibrosis, profound bone‑marrow suppression leading to pancytopenia, and opportunistic infections due to immunosuppression. Patients should report symptoms such as persistent jaundice, shortness of breath, unusual bruising or infections promptly to their clinician.

Metoject should be avoided in individuals with known severe hepatic disease, significant renal impairment, active infections, or hypersensitivity to methotrexate. It is also contraindicated in pregnant women and those planning conception without appropriate contraception. Clinicians must assess each patient’s medical history before initiating therapy.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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