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 presented as a subcutaneous formulation for subcutaneous use. It is employed in the management of rheumatoid arthritis, psoriasis, certain leukemias and lymphomas, and ectopic pregnancy, providing disease‑modifying and antineoplastic effects.

GNH India supplies Imeth as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, with distribution originating from the European Union market. The product conforms to EU regulatory standards and is manufactured under GMP conditions.

Manufacturer / TM Owner

Nordic Group B.V.

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Indications & Clinical Uses

  • Methotrexate is used across several disease categories, primarily as a disease‑modifying antirheumatic drug and an antineoplastic agent.
  • Rheumatoid arthritis: reduces joint inflammation and slows structural damage.
  • Psoriasis: limits skin cell proliferation and improves plaque severity.
  • Acute lymphoblastic leukemia: interferes with malignant cell replication to achieve remission.
  • Non‑Hodgkin lymphoma: suppresses tumor growth by inhibiting DNA synthesis.
  • Ectopic pregnancy: halts trophoblastic tissue development to facilitate medical management.

How It Works

  • Methotrexate inhibits dihydrofolate reductase, blocking the conversion of dihydrofolate to tetrahydrofolate and thereby disrupting folate‑dependent synthesis of purines and pyrimidines. This inhibition impairs DNA, RNA and protein synthesis, leading to antiproliferative effects on rapidly dividing cells and immunosuppression of activated immune cells, which underlies its efficacy in autoimmune disorders and malignancies.

Side Effects

Methotrexate may cause a range of adverse reactions, which are categorized by frequency and severity.

Common Side Effects

  • Nausea or vomiting.
  • Fatigue or malaise.
  • Oral mucosal ulceration (stomatitis).
  • Elevated liver enzymes.
  • Mild leukopenia or thrombocytopenia.

Serious or Rare Side Effects

  • Severe hepatotoxicity or hepatic fibrosis.
  • Pulmonary fibrosis or interstitial pneumonitis.
  • Life‑threatening bone marrow suppression.
  • Acute renal failure.
  • Severe cutaneous reactions (e.g., Stevens‑Johnson syndrome).
  • Opportunistic infections due to immunosuppression.

Precautions & Warnings

  • Before initiating therapy, clinicians should assess baseline organ function and counsel patients on potential risks.
  • Liver monitoring: perform baseline and periodic liver function tests.
  • Blood count monitoring: check complete blood count regularly.
  • Pregnancy avoidance: contraindicated in pregnancy (Category X).
  • Renal function: adjust dose or avoid in severe renal impairment.
  • Drug interactions: review concomitant medications for potential toxicity.
  • Store at 2-8°C: keep refrigerated, protect from light, do not freeze.

Avoid Interactions

Methotrexate interacts with several drug classes; awareness of interaction severity guides clinical management.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase methotrexate toxicity.
  • Sulfonamide antibiotics and trimethoprim: potentiate hematologic suppression.
  • Live vaccines: risk of severe infection due to immunosuppression.

Moderate Interactions (Monitor Closely)

  • Azathioprine or cyclosporine: additive immunosuppressive effect.
  • Warfarin: may enhance anticoagulant effect, requiring INR monitoring.
  • Alcohol or hepatotoxic agents: increase risk of liver injury.

Frequently Asked Questions

Imeth, containing methotrexate, is indicated for rheumatoid arthritis, moderate to severe plaque psoriasis, acute lymphoblastic leukemia, non‑Hodgkin lymphoma, and medical management of ectopic pregnancy. In each case the drug works to suppress abnormal cell proliferation or immune activity, helping to control disease progression.

Methotrexate blocks the enzyme dihydrofolate reductase, preventing the formation of tetrahydrofolate needed for purine and pyrimidine synthesis. This halts DNA, RNA and protein production in rapidly dividing cells, producing antiproliferative effects in cancer and immunosuppressive effects in autoimmune disorders.

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 rheumatologic and oncologic indications, and the prescriber will tailor the schedule to each individual case.

Imeth is classified as Pregnancy Category X, meaning it is contraindicated in pregnancy because it can cause fetal harm. It is also not recommended while breastfeeding, as methotrexate can be excreted in milk and may affect the infant. Effective contraception is required during treatment and for a defined period after discontinuation.

To request Imeth, visit the product page on gnhindia.com, enter the desired quantity, and submit the enquiry form. 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 any necessary import documentation.

Imeth is a methotrexate formulation for subcutaneous injection, offering more predictable absorption than oral tablets and often allowing lower total doses. Compared with biologic DMARDs, methotrexate is less costly but may require more laboratory monitoring. Choice of therapy depends on disease severity, patient comorbidities, and treatment response.

Imeth should be stored at 2‑8 °C (refrigerated), protected from light, and must not be frozen or shaken vigorously. Keep the product in its original packaging until use and discard any vial that has been left at room temperature for longer than the manufacturer‑specified time after reconstitution.

Imeth is supplied as a sterile solution for subcutaneous injection. A healthcare professional administers the dose using a pre‑filled syringe or needle‑free device, typically into the abdomen or thigh. The injection site should be rotated to reduce local irritation, and patients should be instructed on proper technique and disposal of sharps.

Serious risks include severe liver toxicity, pulmonary fibrosis, life‑threatening bone marrow suppression, acute renal failure, and severe cutaneous reactions such as Stevens‑Johnson syndrome. Patients should be monitored regularly for signs of organ dysfunction, and any alarming symptoms—such as persistent cough, jaundice, unexplained bruising, or rash—require immediate medical evaluation.

Imeth 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 lung disease, uncontrolled infections, or significant immunosuppression.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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