Methotrexate Sodium Injection 50 mg Per 2 mL (25 mg/mL) Multi-Dose Vials 2 mL x 5/Pack (RX)

Methotrexate Sodium Injection is used to treat certain types of cancer, such as breast cancer, lung cancer, and leukemia, as well as autoimmune diseases like rheumatoid arthritis and severe psoriasis. It functions as an antimetabolite by interfering with DNA synthesis, thus inhibiting the growth of cancer cells and suppressing immune system activity. Administered intravenously or intramuscularly, Methotrexate requires careful dosing and monitoring to mitigate potential side effects, including liver toxicity and bone marrow suppression, ensuring safe and effective treatment.

Pfizer Injectables presents Methotrexate Sodium Injection, a well-established medication used in the treatment of certain types of cancer, severe psoriasis, and rheumatoid arthritis. Each multi-dose vial contains 25 mg/mL of methotrexate sodium, featuring an effective formulation that meets a range of therapeutic needs. Packaged in a convenient set of five 2 mL vials, this product is ideal for healthcare professionals seeking a versatile, high-quality option for delivering precise doses over multiple administrations. Pfizer's commitment to safety and efficacy ensures that Methotrexate Sodium Injection remains a trusted choice in various medical settings.

Product Details and Features:

Active Ingredient: Each 2 mL vial contains 25 mg/mL of methotrexate sodium, a cornerstone in chemotherapy and immunosuppressive therapy.
Packaging: Supplied in packs containing five multi-dose vials, enabling effective storage and management for multiple dosing schedules.
Indications: Used as part of combination chemotherapy regimens, it is indicated for severe, recalcitrant, disabling psoriasis, rheumatoid arthritis, and certain types of cancer, including leukemia, breast cancer, and osteosarcoma.
Administration: The injectable form allows for precise dosing and rapid onset of action, suitable for both oncology and rheumatology therapeutic protocols.
Manufacturing Excellence: Produced by Pfizer, guaranteeing stringent quality control and reliable therapeutic outcomes.

Mechanism of Action:

Methotrexate interferes with DNA synthesis, repair, and cellular replication by inhibiting the enzyme dihydrofolate reductase. This enzyme is crucial for converting dihydrofolate to tetrahydrofolate, a carrier of one-carbon groups used in the synthesis of nucleotides thymidine and purine. As a result, methotrexate exerts cytotoxic effects on rapidly dividing cells, contributing to its effectiveness in cancer therapy and providing anti-inflammatory and immunosuppressive properties in rheumatoid arthritis and psoriasis treatment.

Warnings:

• Bone Marrow Suppression: Monitor blood counts frequently as methotrexate can cause marked bone marrow depression, leading to anemia, leukopenia, and thrombocytopenia.
  
• Hepatic and Renal Toxicity: Patients should undergo regular liver and kidney function tests due to the risk of severe hepatotoxicity and nephrotoxicity.
  
• Pregnancy and Nursing: Contraindicated during pregnancy (Category X) and breastfeeding due to the potential for fetal harm and excretion in breast milk.
  
• Gastrointestinal Reactions: Could lead to serious complications such as ulcerative stomatitis, diarrhea, and gastrointestinal ulceration.
  
• Pulmonary Toxicity: Watch for symptoms of pulmonary function impairment, which could indicate serious respiratory complications.

Side Effects:

Common side effects may include:

• Nausea and vomiting
  
• Stomatitis
  
• Dizziness
  
• Fatigue

Serious side effects requiring medical attention include:

• Severe skin reactions, possibly indicative of Stevens-Johnson syndrome or toxic epidermal necrolysis
  
• Significant changes in laboratory tests indicating liver or renal damage
  -ymptoms of infection due to immunosuppression, like unusual fatigue, cough, or increased temperature
  
• Respiratory distress symptoms such as persistent dry cough or difficulty breathing

Conclusion:

Methotrexate Sodium Injection 25 mg/mL by Pfizer Injectables is a vital medication in the therapeutic landscape, offering multifaceted benefits across oncology, dermatology, and rheumatology. With its robust mechanism of action backed by the reliability and quality assurance of Pfizer, healthcare providers can confidently incorporate this versatile agent into comprehensive treatment plans. Proper monitoring and adherence to safety protocols are essential to maximize its therapeutic potential and safeguard patient health.