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 sterile injectable for epidural, intra‑articular and intramuscular use. It is employed to treat rheumatoid arthritis, psoriasis, certain cancers and ectopic pregnancy.
GNH India supplies Namaxir as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Actavis Group Ptc Ehf.

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Indications & Clinical Uses

Methotrexate is indicated for several disease groups where it modifies disease progression or eliminates abnormal cells.

  • Rheumatoid arthritis: reduces joint inflammation and slows structural damage.
  • Psoriasis: decreases skin plaque formation and severity.
  • Certain cancers (e.g., leukemia, lymphoma): interferes with rapid tumor cell proliferation.
  • Ectopic pregnancy: halts growth of trophoblastic tissue to allow non‑surgical resolution.

How It Works

  • Methotrexate inhibits the enzyme dihydrofolate reductase, preventing the conversion of dihydrofolate to tetrahydrofolate. This blockade disrupts folate‑dependent synthesis of purines and pyrimidines, leading to impaired DNA, RNA and protein synthesis in rapidly dividing cells, which underlies its immunosuppressive and cytotoxic effects.

Side Effects

Methotrexate may cause a range of adverse reactions that vary in frequency and severity.

Common Side Effects

  • Nausea or vomiting.
  • Fatigue or malaise.
  • Oral mucosal ulceration (mouth sores).
  • Transient elevation of liver enzymes.
  • Mild skin rash.
  • Decreased white blood cell count.

Serious or Rare Side Effects

  • Severe hepatotoxicity or liver fibrosis.
  • Bone marrow suppression leading to pancytopenia.
  • Pulmonary fibrosis or interstitial pneumonitis.
  • Life‑threatening infections due to immunosuppression.
  • Acute renal failure.
  • Anaphylactic or severe hypersensitivity reactions.

Precautions & Warnings

Methotrexate requires careful monitoring and specific safety measures.

  • Liver monitoring: perform regular liver function tests to detect toxicity early.
  • Hematologic monitoring: check complete blood counts frequently to identify bone‑marrow suppression.
  • Pregnancy avoidance: contraindicated in pregnancy; ensure effective contraception for both sexes.
  • Renal function: adjust dose or avoid use in patients with impaired renal clearance.
  • Drug interactions: review concomitant medications that may increase toxicity.
  • Store at room temperature: keep in original packaging, protect from moisture and light.

Avoid Interactions

Methotrexate interacts with several medicines that can alter its efficacy or safety profile.

Major Interactions (Avoid)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): increase risk of renal toxicity.
  • Trimethoprim‑sulfamethoxazole: potentiates bone‑marrow suppression.
  • Proton‑pump inhibitors (e.g., omeprazole): may raise methotrexate plasma levels.
  • Live vaccines: heightened risk of infection due to immunosuppression.

Moderate Interactions (Monitor Closely)

  • Azathioprine: additive immunosuppressive effect.
  • Sulfonamide antibiotics: may increase hematologic toxicity.
  • Phenytoin: can reduce methotrexate clearance.
  • Alcohol: exacerbates hepatic toxicity.

Frequently Asked Questions

Namaxir contains methotrexate, which is prescribed for several serious conditions. It is used to manage rheumatoid arthritis and psoriasis, to treat certain cancers such as leukemia and lymphoma, and to medically resolve ectopic pregnancy when surgery is not required.

Methotrexate blocks the enzyme dihydrofolate reductase, disrupting folate metabolism. This inhibition prevents the synthesis of DNA, RNA and proteins in rapidly dividing cells, thereby reducing inflammation in autoimmune diseases and limiting the growth of malignant cells.

The dose of methotrexate is individualized by the prescribing clinician based on the specific indication, patient weight, renal function and treatment response. Only a qualified health professional can determine the appropriate regimen.

Methotrexate is classified as pregnancy category X, meaning it is contraindicated during pregnancy because it can cause fetal malformations or death. It is also not recommended while breastfeeding, as it may be transferred to the infant through milk.

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 and any necessary import documentation.

Methotrexate is often considered a first‑line DMARD because of its proven efficacy, oral or injectable formulations, and relatively low cost. Compared with biologic agents, it has a broader safety profile but may require more laboratory monitoring for liver and blood‑cell effects.

Namaxir should be stored at room temperature, below 25 °C, in its original container. Protect the product from moisture, direct sunlight and extreme temperatures to maintain stability and potency.

Namaxir is supplied as a sterile injectable solution and can be given by epidural, intra‑articular or intramuscular injection. The route, dose and frequency are determined by the treating physician according to the clinical indication.

Serious risks include severe liver toxicity, bone‑marrow suppression leading to pancytopenia, pulmonary fibrosis, life‑threatening infections and acute renal failure. Patients should be monitored regularly for signs of these complications.

Methotrexate is contraindicated in pregnant women, individuals with severe liver disease, uncontrolled infections, significant renal impairment, and patients with known hypersensitivity to the drug or its excipients.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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