Natrijev Metamizolat Kalceks (Metamizole Sodium Monohydrate)

Metamizole sodium, the active ingredient in Natrijev Metamizolat Kalceks, is a pyrazolone analgesic presented as a sterile injectable solution for intramuscular or intravenous use. It is employed to manage severe acute pain, postoperative pain and high fever in adult patients when other treatments are insufficient.

GNH USA supplies Natrijev Metamizolat Kalceks as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals worldwide.

Metamizole sodium is indicated for conditions that require strong analgesic or antipyretic therapy within the pyrazolone class.

- Severe acute pain: provides rapid relief when conventional analgesics are inadequate. - Post‑operative pain: helps control pain after surgical procedures. - High fever: reduces elevated body temperature when other antipyretics are ineffective.

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

Common Side Effects: - Injection site pain: localized discomfort at the administration site. - Nausea: mild to moderate upset stomach. - Dizziness: transient light‑headedness. - Skin rash: mild erythema or itching. - Mild leukopenia: slight reduction in white blood cells. - Transient hypotension: temporary drop in blood pressure.

Serious or Rare Side Effects: - Agranulocytosis: severe depletion of neutrophils, potentially life‑threatening. - Anaphylaxis: acute, severe allergic reaction. - Stevens‑Johnson syndrome: serious skin and mucous membrane disorder. - Severe hypotension: marked blood pressure fall requiring intervention. - Hepatic enzyme elevation: significant liver function changes. - Blood dyscrasias: rare disorders of blood cell formation.

Metamizole sodium should be used with careful clinical oversight.

- Assess renal and hepatic function: adjust use if impairment is present. - Monitor complete blood count: detect early signs of agranulocytosis. - Avoid in patients with known hypersensitivity to pyrazolones. - Do not use in individuals with a history of severe blood dyscrasias. - Administer only under medical supervision: ensure appropriate dosing and monitoring. - Store at ambient temperature: keep in the original pack, protect from moisture and direct sunlight.

Metamizole sodium can interact with several drug classes; awareness helps prevent adverse outcomes.

Major Interactions (Avoid): - Concurrent myelosuppressive agents: increase risk of severe neutropenia. - Other NSAIDs or pyrazolones: heighten potential for blood dyscrasias. - Anticoagulants: may amplify bleeding tendency.

Moderate Interactions (Monitor Closely): - Diuretics: may affect renal clearance, requiring dose adjustment. - Antihypertensives: additive hypotensive effect. - Opioid analgesics: possible enhanced sedation or respiratory depression. - CYP450 modulators: may alter plasma levels, necessitating monitoring.