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### Zinc Sulfate **Overview** Zinc is an essential trace mineral vital for numerous enzymatic functions, immune support, wound healing, and protein synthesis. **Primary Indications** * Zinc deficiency (diagnosed via serum zinc levels or clinical signs/symptoms) * Adjunctive treatment for Wilson's disease (to reduce copper absorption) **Adult Dosing** * **Zinc Deficiency:** 50-150 mg elemental zinc per day, divided into 2-3 doses. Duration depends on clinical response and resolution of deficiency. * **Wilson's Disease:** 100-150 mg elemental zinc per day, divided into 3 doses, typically given between meals. **Pediatric Dosing** Dosing is highly variable and dependent on age, weight, and severity of deficiency. Consult specific pediatric guidelines or refer to product labeling. A common approach for severe deficiency is 1-2 mg/kg/day elemental zinc, not to exceed the adult dose. **Dose Adjustments** No specific dose adjustments are typically required for hepatic or renal impairment, however, caution is advised in severe renal disease as zinc excretion may be reduced. Monitor serum zinc levels. **Contraindications** * Hypersensitivity to zinc sulfate. **Adverse Effects** * **Common:** Nausea, vomiting, diarrhea, abdominal pain, metallic taste. * **Less Common:** Headache, dizziness, fatigue, blurred vision, rash. * **Rare:** Acute zinc toxicity can occur with very high doses and may manifest as severe gastrointestinal distress, lethargy, and renal damage. **Key Drug Interactions** * **Antibiotics (Quinolones, Tetracyclines):** Zinc can chelate with these antibiotics, reducing their absorption. Administer zinc at least 2 hours before or 4-6 hours after these antibiotics. * **Penicillamine:** Zinc can decrease penicillamine absorption and efficacy. Separate administration by at least 2 hours. * **Thiazide Diuretics:** May increase urinary zinc excretion. * **Iron Supplements:** High doses of zinc can interfere with iron absorption. **Monitoring** * Serum zinc levels (if deficiency is being treated). * Clinical signs and symptoms of zinc deficiency (e.g., skin lesions, impaired wound healing, alopecia). * Monitor for adverse gastrointestinal effects. **Clinical Pearls** * Elemental zinc content varies by salt form (e.g., zinc sulfate 22% elemental zinc). Always calculate dose based on elemental zinc. * Administer oral zinc formulations with food to minimize gastrointestinal upset, except when interacting with certain antibiotics or penicillamine. * Long-term, high-dose zinc therapy can lead to copper deficiency and neutropenia. *** **Disclaimer:** This information is for educational purposes only and does not constitute medical advice. Always consult the most current prescribing information and your healthcare provider for any medical decisions.