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# Calamine Lotion ## Overview Calamine lotion is a topical protectant and antipruritic suspension typically consisting of zinc oxide (active) and ferric oxide (coloring agent). It acts as a mild astringent to soothe irritated skin and dry out oozing from dermatological conditions. ## Primary Indications * Relief of itching, pain, and discomfort associated with minor skin irritations (e.g., poison ivy, poison oak, poison sumac, insect bites, chickenpox). * Drying of weeping or oozing skin lesions. ## Adult Dosing * Apply a thin layer to the affected area as needed, typically 3 to 4 times daily. * Shake well before use to ensure uniform suspension distribution. ## Pediatric Dosing * **Children and Infants:** Safe for use in children. Apply a thin layer to the affected area 3 to 4 times daily, or as directed by a healthcare provider. * **Note:** Avoid applying to large surface areas in infants to minimize potential systemic absorption, though this risk is negligible. ## Dose Adjustments * No formal dose adjustments are necessary for hepatic or renal impairment due to the topical nature of the product. ## Contraindications * Hypersensitivity to zinc oxide, ferric oxide, or any inactive ingredients (e.g., bentonite, glycerin). * Do not apply to deep, puncture, or infected wounds, or significant burns without medical supervision. * Avoid contact with eyes, nose, mouth, and other mucous membranes. ## Adverse Effects * **Common:** Dryness, localized skin irritation, or contact dermatitis. * **Rare:** Allergic reaction (rash, itching, swelling) at the application site. ## Key Drug Interactions * Minimal clinical significance due to negligible systemic absorption. * Should not be applied simultaneously with other topical medications on the same skin area to avoid interference with absorption or formulation stability. ## Monitoring * Monitor for signs of secondary infection (increased redness, warmth, pus, or fever). * Evaluate for resolution of symptoms; if conditions persist for >7 days or worsen, discontinue and consult a healthcare provider. ## Clinical Pearls * **Formulation:** Calamine turns white as it dries, which may be cosmetically undesirable on the face or exposed areas. * **Instruction:** Ensure the skin is clean and dry before application. * **Safety:** Do not ingest. Keep out of reach of children to prevent accidental ingestion. * **Storage:** Store at room temperature; do not freeze. The suspension may settle over time; vigorous shaking is required before each application. *** **Educational Disclaimer:** This information is for educational purposes only. Always verify drug-specific prescribing information against the manufacturer's official labeling, local institutional protocols, or current clinical databases (e.g., Lexicomp, Micromedex) before administration.