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# Liquid Paraffin
## Overview
Liquid paraffin is a mineral oil used as a lubricant laxative. It softens stool by coating it with a waterproof film, preventing water reabsorption from the colon.
## Primary Indications
* Constipation
## Adult Dosing
* **Oral:** 10 mL to 40 mL once daily, typically at bedtime. The dose should be individualized based on patient response. Do not exceed 40 mL daily.
## Pediatric Dosing
* **Oral:**
* **1 to 5 years:** 5 mL once daily.
* **6 to 12 years:** 10 mL once daily.
* **Over 12 years:** 10 mL to 40 mL once daily.
* Maximum dose for children is typically 20 mL daily, but consult local protocols.
## Dose Adjustments
* No specific dose adjustments are necessary for hepatic or renal impairment.
## Contraindications
* Abdominal pain, nausea, vomiting, or other symptoms of appendicitis or undiagnosed abdominal conditions.
* Ileus.
* Hypersensitivity to liquid paraffin.
* Prophylactic use in patients at risk of aspiration.
## Adverse Effects
* Diarrhea, abdominal cramps, nausea, vomiting.
* Anal leakage (especially with higher doses or in patients with impaired anal sphincter control).
* Lipoid pneumonia (rare, associated with chronic aspiration, particularly in the elderly or debilitated).
* Interference with absorption of fat-soluble vitamins (A, D, E, K) with chronic, high-dose use.
## Key Drug Interactions
* **Fat-soluble vitamins (A, D, E, K):** Chronic use may decrease absorption. Consider separate administration or supplementation.
* **Cholestyramine, colestipol:** May reduce absorption of other drugs by binding them in the gastrointestinal tract.
* **Docusate:** Concurrent use is generally not recommended as it may increase systemic absorption of mineral oil.
## Monitoring
* Bowel movements (frequency, consistency).
* Signs of dehydration or electrolyte imbalance with significant diarrhea.
* Signs of aspiration if risk factors are present.
## Clinical Pearls
* Administer undiluted or mixed with water.
* Avoid use in patients at risk of aspiration (e.g., elderly, debilitated, those with dysphagia or reflux).
* Long-term, habitual use should be discouraged due to potential for vitamin malabsorption and dependence.
* Ensure adequate hydration when using laxatives.
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Please verify the current prescribing information and local protocols for complete and up-to-date drug information.