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# Calamine Lotion ## Overview Calamine lotion is a topical protectant and antipruritic agent consisting of a mixture of zinc oxide and ferric oxide. It provides a cooling, soothing effect upon evaporation and acts as a mild astringent. ## Primary Indications * Pruritus associated with minor skin irritations (e.g., poison ivy/oak/sumac, insect bites, chickenpox). * Relief of weeping/oozing skin lesions. ## Adult Dosing Apply a thin layer to the affected area 3 to 4 times daily as needed. Shake the bottle well before each use to ensure even suspension. ## Pediatric Dosing Same as adult dosing: apply a thin layer to the affected area 3 to 4 times daily. Use caution in infants and young children to prevent ingestion or application near the mouth or nostrils. ## Dose Adjustments No systemic dose adjustments are required as the drug is for topical use only. ## Contraindications * Hypersensitivity to any component of the formulation. * Do not apply to deep puncture wounds, animal bites, or serious burns. * Avoid contact with eyes or mucous membranes. ## Adverse Effects * **Dermatological:** Mild stinging, drying, or irritation of the skin. * **Systemic:** Generally negligible due to poor systemic absorption. ## Key Drug Interactions There are no clinically significant drug-drug interactions for topical calamine lotion. However, avoid applying other topical medicated products to the same site simultaneously, as it may reduce their absorption or efficacy. ## Monitoring Monitor for signs of worsening irritation, infection (e.g., purulent drainage, increasing erythema, or heat), or allergic contact dermatitis. Discontinue use if condition persists beyond 7 days or worsens. ## Clinical Pearls * **Texture:** Shake the bottle vigorously; the suspension settles quickly. * **Mechanism:** The cooling sensation results from the evaporation of the liquid base, which provides temporary relief from itching. * **Application:** Calamine can leave a chalky residue. It is non-occlusive, making it suitable for weeping lesions, but it may cause excessive dryness on dry or scaling skin. * **Accidental Ingestion:** While generally considered low toxicity, large ingestions may require assessment for potential gastric irritation or zinc toxicity; contact Poison Control. *** **Disclaimer:** This information is for educational purposes only and does not replace medical judgment. Always verify current prescribing information, institutional protocols, and patient-specific factors before clinical application.