Lantarel Fs

Methotrexate, the active ingredient in Lantarel Fs, is an antimetabolite (folate antagonist) presented as an injectable formulation for intramuscular, intravenous, and subcutaneous administration. It is used to manage rheumatoid arthritis, psoriasis, acute lymphoblastic leukemia, non‑Hodgkin lymphoma and ectopic pregnancy in suitable patients.

GNH USA supplies Lantarel Fs as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, and pharmacies worldwide, with a focus on quality and regulatory compliance.

Methotrexate is employed in several disease categories where inhibition of folate metabolism is therapeutic.

Rheumatoid arthritis: reduces joint inflammation and slows disease progression. Psoriasis: decreases skin cell proliferation and improves lesions. Acute lymphoblastic leukemia: induces remission by halting malignant cell proliferation. Non‑Hodgkin lymphoma: contributes to tumor control through cytotoxic effects. Ectopic pregnancy: terminates trophoblastic tissue to avoid surgical intervention.

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

Common Side Effects: - Nausea: mild gastrointestinal upset. - Fatigue: general tiredness. - Elevated liver enzymes: mild hepatic enzyme increase.

Serious or Rare Side Effects: - Severe liver toxicity: hepatitis or fibrosis. - Pulmonary fibrosis: interstitial lung disease. - Bone marrow suppression: pancytopenia or severe leukopenia.

When using methotrexate, several precautions should be observed to minimize risks. - Pregnancy: contraindicated; teratogenic (Category X). - Renal function: assess before and during therapy; dose adjust if impairment. - Hepatic monitoring: regular liver function tests required. - Hematologic monitoring: periodic complete blood counts to detect suppression. - Concomitant drugs: avoid NSAIDs and other folate antagonists without supervision. - Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

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

Major Interactions (Avoid): - NSAIDs: increase methotrexate toxicity by reducing renal clearance. - Proton pump inhibitors: may raise methotrexate levels. - Trimethoprim‑sulfamethoxazole: additive bone marrow suppression.

Moderate Interactions (Monitor Closely): - Azathioprine: combined immunosuppression risk. - Live vaccines: risk of infection due to immunosuppression. - Vitamin B12 or folic acid supplements: may reduce efficacy, require dose adjustment.