Product image of Imeth (Methotrexate) supplied by GNH India

Imeth

Active Ingredient:
Methotrexate
Origin:
EU

Imeth (Methotrexate)

Methotrexate, the active ingredient in Imeth, is an antimetabolite (folate antagonist) presented as an oral tablet for oral use. It is employed to treat autoimmune disorders and certain malignancies in adult patients.

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

Manufacturer / TM Owner

Nordic Pharma

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Indications & Clinical Uses

Methotrexate is an antimetabolite used in autoimmune and oncologic disease pathways.

  • Rheumatoid arthritis: reduces joint inflammation and slows disease progression.
  • Psoriasis: diminishes skin lesions and plaque formation.
  • Acute lymphoblastic leukemia: interferes with malignant cell proliferation.
  • Osteosarcoma: inhibits tumor growth by blocking DNA synthesis.

How It Works

  • Methotrexate inhibits dihydrofolate reductase, preventing conversion of dihydrofolate to tetrahydrofolate and thereby reducing purine and pyrimidine synthesis. This leads to decreased DNA, RNA and protein production, limiting rapid cell division in malignant cells and modulating immune activity through increased extracellular adenosine release.

Side Effects

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

Common Side Effects

  • Nausea or vomiting.
  • Oral ulceration or mucositis.
  • Fatigue or general weakness.
  • Elevated liver enzymes.
  • Decreased white blood cell count.

Serious or Rare Side Effects

  • Severe hepatic toxicity or fibrosis.
  • Pulmonary fibrosis or interstitial pneumonitis.
  • Life‑threatening infection due to bone‑marrow suppression.
  • Acute renal failure.
  • Severe cutaneous reactions such as Stevens‑Johnson syndrome.
  • Hematologic malignancies or aplastic anemia.

Precautions & Warnings

Methotrexate requires careful monitoring and specific safety measures.

  • Liver monitoring: perform regular liver function tests to detect hepatotoxicity.
  • Hematologic monitoring: check complete blood counts frequently for bone‑marrow suppression.
  • Pregnancy avoidance: contraindicated in pregnancy; ensure effective contraception.
  • Renal function: adjust dose or avoid use in patients with impaired renal clearance.
  • Drug interactions: review concomitant medications for potential synergistic toxicity.
  • Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Methotrexate interacts with several drug classes that can alter its safety or efficacy.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase methotrexate toxicity.
  • Trimethoprim‑sulfamethoxazole: heightens risk of bone‑marrow suppression.
  • Live vaccines: may cause uncontrolled infection.
  • Penicillins (high‑dose): can raise methotrexate plasma levels.

Moderate Interactions (Monitor Closely)

  • Proton‑pump inhibitors: may reduce renal clearance of methotrexate.
  • Sulfonamide antibiotics: require close blood‑count monitoring.
  • Azathioprine or leflunomide: additive immunosuppression.
  • Warfarin: enhanced anticoagulant effect, monitor INR.

Frequently Asked Questions

Imeth contains methotrexate, which is prescribed for rheumatoid arthritis, psoriasis, acute lymphoblastic leukemia and osteosarcoma. In autoimmune diseases it helps control inflammation, while in cancer it interferes with rapid cell division.

Methotrexate blocks the enzyme dihydrofolate reductase, reducing the production of tetrahydrofolate needed for DNA and RNA synthesis. This limits the growth of rapidly dividing cells and also increases extracellular adenosine, which dampens inflammatory pathways.

The specific dose of Imeth is determined by the prescribing clinician based on the patient’s condition, weight, renal function and treatment goals. Dosage regimens vary widely between autoimmune and oncologic indications.

Imeth is classified as pregnancy category X, meaning it is contraindicated in pregnancy due to a high risk of fetal malformations and miscarriage. It is also not recommended while breastfeeding because it can be excreted in milk.

To place an order, submit an enquiry on the Imeth 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.

Compared with biologic agents, methotrexate is a small‑molecule antimetabolite that can be taken orally and is generally less costly. However, it may require more laboratory monitoring for liver and blood‑cell effects, whereas biologics often have different safety profiles and administration routes.

Imeth should be stored at room temperature, below 25 °C, in its original packaging. Keep the product away from moisture, heat and direct sunlight to maintain stability.

Imeth is supplied as an oral tablet and is taken by mouth with water. The exact timing (e.g., with or without food) and frequency are directed by the prescriber based on the therapeutic indication.

Serious risks include severe liver toxicity, pulmonary fibrosis, life‑threatening infections due to bone‑marrow suppression, acute renal failure, and rare but severe skin reactions such as Stevens‑Johnson syndrome. Prompt medical attention is required if any of these occur.

Imeth should not be used by pregnant women, individuals with severe liver or kidney disease, patients with known hypersensitivity to methotrexate, or those receiving live vaccines. It is also contraindicated in patients with uncontrolled infections.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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