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

• Microlax, an osmotic laxative, is used to manage conditions affecting bowel transit and stool consistency.
• Constipation: provides rapid softening of stool and facilitates evacuation, offering prompt relief for occasional constipation in both adults and children.
• Fecal impaction: helps break down hardened stool, allowing safe removal and relief of blockage, especially in patients with chronic constipation.
• Bowel cleansing before procedures: clears the colon effectively to prepare for diagnostic or surgical interventions such as colonoscopy, sigmoidoscopy or minor surgeries.

• Microlax works by creating an osmotic gradient in the rectum. The sorbitol and sodium citrate draw water into the intestinal lumen, increasing stool volume and softness. Sodium lauryl sulfoacetate acts as a surfactant, reducing surface tension and stimulating peristalsis, which together promote rapid evacuation of the bowel. The combined osmotic and surfactant actions result in a swift increase in intraluminal pressure, facilitating bowel movement within minutes after administration.

Microlax may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Rectal irritation: mild burning or itching at the application site.
• Abdominal cramping: transient discomfort or spasms.
• Urgent bowel movement: rapid evacuation leading to urgency.
• Loose stool or mild diarrhea: increased water content in stool.
• Nausea: occasional feeling of queasiness.
• Flatulence: increased gas production.

Serious or Rare Side Effects

• Severe abdominal pain: may indicate underlying obstruction.
• Rectal bleeding: uncommon but requires medical evaluation.
• Allergic reaction: rash, swelling, or difficulty breathing.

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

• Assess for bowel obstruction: avoid use if mechanical obstruction is suspected.
• Use with caution in patients with inflammatory bowel disease: may exacerbate symptoms.
• Limit frequency: do not exceed recommended use to prevent electrolyte imbalance.
• Monitor fluid and electrolyte status in elderly or dehydrated patients.
• Avoid concurrent use with other strong laxatives: may cause severe diarrhea.
• Store at room temperature: keep in original container, protect from moisture and direct sunlight.

Microlax can interact with certain medicines; review the following interaction categories.

Major Interactions (Avoid)

• Concurrent use with oral potassium supplements: risk of hyperkalemia due to altered electrolyte balance.
• Combined with other osmotic laxatives (e.g., magnesium hydroxide): may cause severe diarrhea and dehydration.
• Use with antidiarrheal agents (e.g., loperamide): may reduce efficacy and increase risk of colonic distension.

Moderate Interactions (Monitor Closely)

• Anticholinergic medications: may diminish peristaltic response, reducing effectiveness.
• Diuretic therapy: monitor electrolytes as increased fluid loss may occur.
• Heart failure medications (e.g., ACE inhibitors): watch for electrolyte shifts.