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# Liquid Paraffin (Mineral Oil)
## Overview
Liquid paraffin is a mineral oil used as an emollient and laxative. It works by lubricating the stool and the intestinal wall, softening the stool and facilitating its passage.
## Primary Indications
* **Laxative:** Treatment of constipation.
* **Emollient:** Topical use for dry skin conditions.
## Adult Dosing
* **Constipation:** 10-45 mL orally once daily, typically at bedtime. Do not lie down immediately after administration.
* **Emollient:** Apply a thin layer to affected skin areas as needed.
## Pediatric Dosing
* **Constipation:**
* 2-5 years: 5-10 mL orally once daily.
* 5-12 years: 10-15 mL orally once daily.
* Over 12 years: 10-45 mL orally once daily.
* **Note:** Use in children under 12 years should be under medical supervision. Oral administration is not recommended for infants due to risk of aspiration.
## Dose Adjustments
No dose adjustments are typically required based on renal or hepatic impairment.
## Contraindications
* Hypersensitivity to liquid paraffin.
* Intestinal obstruction.
* Appendicitis or acute abdominal pain.
* Prophylaxis against fecal impaction in patients with reduced consciousness or risk of aspiration (oral use).
* Children under 2 years of age (oral use, high risk of aspiration).
## Adverse Effects
* **Gastrointestinal:** Abdominal cramping, nausea, vomiting, diarrhea, anal leakage, abdominal distension.
* **Aspiration Pneumonitis:** Particularly with oral use in prone individuals or if not administered correctly.
* **Fat-Soluble Vitamin Malabsorption:** With chronic, high-dose use due to interference with absorption.
* **Lipoid Pneumonia:** Rare but serious with chronic aspiration of mineral oil.
* **Topical:** Skin irritation, rash.
## Key Drug Interactions
* **Fat-Soluble Vitamins (A, D, E, K):** Reduced absorption with chronic oral use.
* **Docusate Sodium:** Concurrent use may increase absorption of mineral oil, potentially leading to adverse effects.
## Monitoring
* Monitor for effectiveness in relieving constipation.
* Assess for abdominal distension, cramping, and anal leakage.
* Evaluate for signs of aspiration if administered to at-risk individuals.
* Monitor for signs of malabsorption of fat-soluble vitamins with long-term use.
## Clinical Pearls
* Oral liquid paraffin should be taken at bedtime and the patient should not lie down for at least 30 minutes afterward to minimize the risk of aspiration.
* It is not for chronic use due to potential for vitamin malabsorption and dependence.
* Avoid use in patients at risk of aspiration, especially infants, the elderly, and those with dysphagia or impaired gag reflexes.
* Topical use can be effective for dry skin but may leave a greasy residue. Apply sparingly.
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*Disclaimer: Always consult the most current prescribing information and relevant literature for definitive guidance. This information is intended for healthcare professionals and does not replace professional judgment.*