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# Liquid Paraffin + Milk of Magnesia + Sodium Picosulphate
## Overview
This combination is a potent osmotic and stimulant laxative agent. It typically comprises a lubricant (liquid paraffin), an osmotic laxative (magnesium hydroxide/milk of magnesia), and a contact/stimulant laxative (sodium picosulphate). It is used for the management of severe constipation or bowel clearance.
## Primary Indications
* Treatment of chronic or acute constipation.
* Bowel evacuation prior to medical procedures or surgery.
## Adult Dosing
* **Standard dose:** Typically 10–20 mL once daily, preferably at bedtime.
* **Maximum:** Do not exceed 30 mL/day unless specifically directed by a provider for bowel preparation.
* **Note:** Dosing varies significantly by brand formulation and local institutional protocols. Refer to the specific product packaging for concentration ratios.
## Pediatric Dosing
* **Children < 6 years:** Generally not recommended unless under direct specialist supervision.
* **Children 6–12 years:** 5–10 mL once daily at bedtime.
* **Maximum:** 10 mL/day.
* **Caution:** Liquid paraffin carries a significant risk of lipid pneumonia if aspirated; use with extreme caution in children with swallowing difficulties or GERD.
## Dose Adjustments
* **Renal Impairment:** Avoid or exercise extreme caution in patients with renal failure due to the risk of hypermagnesemia from the Milk of Magnesia component.
* **Hepatic Impairment:** No specific adjustment, but use with caution in patients with altered metabolic status.
## Contraindications
* Intestinal obstruction or ileus.
* Acute surgical abdominal conditions (e.g., appendicitis).
* Presence of abdominal pain of unknown origin.
* Difficulty swallowing (risk of aspiration).
* Severe dehydration.
* Hypersensitivity to any component.
## Adverse Effects
* **Gastrointestinal:** Abdominal cramping, diarrhea, nausea, and perianal irritation.
* **Respiratory:** Lipid pneumonia (rare, result of paraffin aspiration).
* **Metabolic:** Electrolyte disturbances (hypokalemia, hypermagnesemia, dehydration) with chronic use.
* **Other:** Rectal leakage (paraffin), malabsorption of fat-soluble vitamins (A, D, E, K) with long-term use.
## Key Drug Interactions
* **Fat-soluble vitamins:** Liquid paraffin may reduce the absorption of vitamins A, D, E, and K.
* **Oral contraceptives/medications:** Laxatives can decrease the absorption of concurrently administered oral medications by shortening transit time.
* **Tetracyclines/Fluoroquinolones:** Magnesium salts (Milk of Magnesia) can chelate these antibiotics, significantly reducing their efficacy. Space doses by at least 2–4 hours.
* **Diuretics:** Potential for additive potassium loss.
## Monitoring
* Monitor hydration status and serum electrolytes (specifically magnesium and potassium) in elderly or renally impaired patients.
* Assess for bowel frequency and consistency; discontinue once regularity is achieved.
## Clinical Pearls
* **Aspiration Risk:** Liquid paraffin should never be taken immediately before reclining; ensure the patient remains upright for at least 30–60 minutes post-administration.
* **Chronicity:** This combination is designed for short-term relief. Long-term use can lead to "lazy bowel" syndrome (dependence) and electrolyte imbalances.
* **Hydration:** Advise patients to increase daily water intake significantly while using this formulation to improve efficacy and prevent further dehydration.
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**Educational Disclaimer:** This information is for educational purposes and does not constitute medical advice. Dosing protocols may vary by manufacturer and local formulary. Always verify specific product concentrations and prescribing information via current clinical resources (e.g., BNF, Lexicomp, or product labels) before administration.
