Methotrexate Gry

Methotrexate, the active ingredient in Methotrexate Gry, is an antimetabolite (folate antagonist) presented as an injectable solution for intramuscular, intrathecal and intravenous use. It is employed to treat rheumatoid arthritis, psoriasis, selected malignancies and ectopic pregnancy.

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

Methotrexate is an antimetabolite used in autoimmune disorders and oncology.

- Rheumatoid arthritis: reduces joint inflammation and slows disease progression. - Psoriasis: diminishes skin lesions and plaque formation. - Acute lymphoblastic leukemia: interferes with malignant cell proliferation. - Non‑Hodgkin lymphoma: impairs growth of lymphoma cells. - Breast cancer: used in combination regimens to inhibit tumor replication. - Ectopic pregnancy: terminates trophoblastic tissue growth.

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

Common Side Effects: - Nausea or vomiting. - Fatigue and malaise. - Oral mucositis or mouth sores. - Mild elevation of liver enzymes. - Transient low white blood cell counts. - Mild skin rash.

Serious or Rare Side Effects: - Severe bone marrow suppression leading to pancytopenia. - Pulmonary toxicity presenting as interstitial pneumonitis. - Significant hepatotoxicity with fibrosis or cirrhosis. - Life‑threatening skin reactions such as Stevens‑Johnson syndrome. - Renal impairment due to crystal nephropathy. - Teratogenic effects causing fetal malformations.

Methotrexate requires careful monitoring and specific safety measures.

- Pregnancy: contraindicated (Category X) – avoid use in women of childbearing potential. - Renal function: assess creatinine clearance before initiation and periodically thereafter. - Liver function: monitor transaminases regularly; avoid in pre‑existing severe hepatic disease. - Hematologic status: perform baseline and ongoing complete blood counts. - Drug interactions: review concomitant medications that may increase toxicity. - Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

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

Major Interactions (Avoid): - Live vaccines: increased risk of infection. - High‑dose NSAIDs: heightened gastrointestinal and renal toxicity. - Sulfonamides: enhanced myelosuppression. - Trimethoprim‑sulfamethoxazole: increased risk of severe bone marrow suppression.

Moderate Interactions (Monitor Closely): - Penicillins: may raise methotrexate plasma levels. - Proton pump inhibitors: can affect renal clearance. - Alcohol: may exacerbate hepatotoxicity.