Microlax (Sorbitol, Liquid (Crystallising), Sodium Citrate, Sodium Lauryl Sulfoacetate 70%)

Microlax is an osmotic laxative enema that works on the lower gastrointestinal tract to relieve stool retention.

• Constipation: Provides rapid softening of stool and promotes evacuation in patients with functional or acute constipation.
• Occasional bowel irregularity: Helps normalize bowel movements in individuals experiencing irregularity without chronic disease.
• Diagnostic procedure preparation: Clears the rectum and distal colon to facilitate colonoscopy, sigmoidoscopy, or radiographic examinations.

• Microlax acts as an osmotic laxative and surfactant. Sorbitol and sodium citrate increase the osmotic pressure within the intestinal lumen, drawing water into the colon. Sodium lauryl sulfoacetate reduces surface tension, allowing the fluid to spread evenly and stimulate peristalsis. The combined effect softens feces and accelerates transit, producing a prompt bowel movement within minutes after administration.

Microlax may cause local and systemic reactions, most of which are mild and transient.

Common Side Effects

• Mild abdominal cramping: Transient discomfort in the lower abdomen.
• Rectal irritation: Mild burning or itching at the application site.
• Loose stools: Watery bowel movements shortly after use.
• Nausea: Occasional feeling of queasiness.

Serious or Rare Side Effects

• Severe abdominal pain: Intense pain requiring medical evaluation.
• Allergic reaction: Rash, swelling, or difficulty breathing indicating hypersensitivity.
• Rectal bleeding: Unexpected bleeding from the rectal mucosa.
• Electrolyte imbalance: Rare disturbance of sodium or potassium levels with excessive use.

Before using Microlax, consider the following precautions to ensure safe and effective use.

• Age restriction: Not recommended for infants under 2 years without medical supervision.
• Existing bowel conditions: Use with caution in patients with inflammatory bowel disease or obstruction.
• Medication interactions: Consult a healthcare professional if using other laxatives or antidiarrheal agents.
• Pregnancy and lactation: Discuss use with a physician as safety data are limited.
• Allergies: Avoid if known hypersensitivity to sorbitol, sodium citrate, or sodium lauryl sulfoacetate.
• Store at ambient temperature: Keep below 25°C in the original packaging, protected from moisture and direct sunlight.

Microlax can interact with certain medications, affecting their absorption or efficacy.

Major Interactions (Avoid)

• Oral electrolyte supplements: May alter electrolyte balance when combined with high‑dose enema use.
• Antidiarrheal agents (e.g., loperamide): Can reduce the intended laxative effect.

Moderate Interactions (Monitor Closely)

• Other laxatives: Concurrent use may increase risk of dehydration or electrolyte disturbances.
• Antacids containing magnesium: May enhance osmotic effect and cause loose stools.
• Diuretics: Monitor fluid status as combined osmotic action could affect hydration.