Product image of Namaxir (Methotrexate) supplied by GNH India

Namaxir

Active Ingredient:
Methotrexate
Origin:
EU

Namaxir (Methotrexate)

Methotrexate, the active ingredient in Namaxir, is an antimetabolite (folate antagonist) presented as a parenteral solution for injection use. It is used to treat rheumatoid arthritis, psoriasis and certain cancers in adults.

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

Manufacturer / TM Owner

Teva B.V

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Indications & Clinical Uses

  • Methotrexate is employed across several disease families, primarily inflammatory and malignant conditions.
  • Rheumatoid arthritis: reduces joint inflammation and slows disease progression.
  • Psoriasis: improves skin lesions and overall disease severity.
  • Leukemia and lymphoma: interferes with malignant cell proliferation.
  • Intraarticular treatment of joint inflammation: provides local immunosuppression and pain relief.

How It Works

  • Methotrexate inhibits dihydrofolate reductase, leading to reduced tetrahydrofolate pools and impaired synthesis of purine and pyrimidine nucleotides. This blocks DNA replication in rapidly dividing cells and modulates immune cell activity, resulting in anti‑inflammatory and anti‑neoplastic effects.

Side Effects

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

Common Side Effects

  • Nausea and vomiting
  • Fatigue or weakness
  • Mouth sores (stomatitis)
  • Decreased blood cell counts (anemia, leukopenia, thrombocytopenia)
  • Elevated liver enzymes
  • Hair thinning or loss

Serious or Rare Side Effects

  • Severe liver toxicity or fibrosis
  • Pulmonary fibrosis or interstitial pneumonitis
  • Profound bone marrow suppression
  • Acute renal failure
  • Life‑threatening infections
  • Anaphylactic or severe hypersensitivity reactions

Precautions & Warnings

  • When using methotrexate, careful monitoring and specific precautions are essential.
  • Monitor liver function: perform regular liver enzyme tests.
  • Assess renal function: adjust dose or avoid use in significant impairment.
  • Check blood counts: frequent CBC monitoring for cytopenias.
  • Avoid in pregnancy: drug is teratogenic and contraindicated (Category X).
  • Use effective contraception: required during treatment and for several months after discontinuation.
  • Store at ambient temperature: keep in original container, protect from moisture and light.

Avoid Interactions

Methotrexate interacts with several medicines; some combinations must be avoided while others require close monitoring.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase risk of renal toxicity.
  • Live vaccines: may cause severe infection due to immunosuppression.
  • Trimethoprim or other folate antagonists: additive toxicity.

Moderate Interactions (Monitor Closely)

  • Sulfonamide antibiotics: may enhance myelosuppression.
  • Azathioprine or other immunosuppressants: increased risk of bone‑marrow suppression.
  • Proton‑pump inhibitors: may alter methotrexate clearance.
  • Alcohol: can exacerbate liver toxicity.

Frequently Asked Questions

Namaxir contains methotrexate and is indicated for the treatment of rheumatoid arthritis, moderate to severe plaque psoriasis, certain leukemias and lymphomas, and for intra‑articular injection to reduce joint inflammation. It is prescribed by specialists to manage inflammatory disease activity and to target rapidly dividing cancer cells.

Methotrexate blocks the enzyme dihydrofolate reductase, which is essential for producing tetrahydrofolate, a cofactor needed for DNA, RNA and protein synthesis. By limiting nucleotide formation, it suppresses the proliferation of immune cells and malignant cells, providing anti‑inflammatory and anti‑cancer effects.

The dose of Namaxir is individualized and set by the prescribing clinician based on the specific indication, patient weight, renal and hepatic function, and treatment response. Healthcare providers determine the appropriate amount and schedule for each patient.

Methotrexate is classified as Pregnancy Category X because it is teratogenic and can cause fetal harm. It is contraindicated during pregnancy and should be stopped well before conception. Use while breastfeeding is not recommended, as the drug can be excreted in milk and affect the infant.

To order Namaxir, 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 the necessary import documentation.

Compared with biologic DMARDs such as adalimumab, methotrexate (Namaxir) is an oral or injectable small‑molecule agent that is less expensive and has a well‑established safety profile, but it may be slower to achieve disease control. Unlike newer biologics, it does not target specific cytokines, so it is often used in combination with other agents for optimal effect.

Namaxir should be stored at ambient temperature, below 25 °C, in its original packaging. Protect the product from moisture, direct sunlight and extreme temperatures. Do not freeze. Follow standard aseptic handling procedures when preparing for injection.

Namaxir is supplied as a sterile solution for parenteral use and is administered by a qualified healthcare professional via epidural, intra‑articular or intramuscular injection, depending on the therapeutic indication and the prescribing protocol.

The most serious risks include severe liver toxicity, pulmonary fibrosis or interstitial pneumonitis, profound bone‑marrow suppression leading to anemia or infection, and acute renal failure. Patients should be monitored regularly for signs of these complications, and therapy should be discontinued if they occur.

Namaxir is contraindicated in pregnant women, individuals with severe hepatic disease, significant renal impairment, active uncontrolled infections, and patients with known hypersensitivity to methotrexate or any component of the formulation. Caution is also advised for patients with pre‑existing blood‑cell disorders.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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