Product image of Microlax (Sodium Citrate, Sorbitol (E420), Sodium Lauryl Sulfoacetate) supplied by GNH India

Microlax

Active Ingredient:
Sodium Citrate, Sorbitol (E420), Sodium Lauryl Sulfoacetate
Origin:
EU

Microlax (Sodium Citrate, Sorbitol (E420), Sodium Lauryl Sulfoacetate)

Sodium citrate, the active ingredient in Microlax, is a laxative presented as an enema for rectal use. It works together with sorbitol and sodium lauryl sulfoacetate to relieve constipation, fecal impaction and to cleanse the bowel before diagnostic procedures.
GNH India supplies Microlax as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Mcneil Ab

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Indications & Clinical Uses

Microlax is a rectal laxative used to treat conditions affecting bowel evacuation.

  • Constipation: provides rapid softening of stool and facilitates evacuation.
  • Fecal impaction: helps relieve impacted stool in the rectum.
  • Bowel cleansing prior to diagnostic procedures: clears the rectum to improve visibility during examinations such as colonoscopy.

How It Works

  • Microlax exerts its effect through the osmotic action of sodium citrate, which draws water into the intestinal lumen, and the surfactant action of sodium lauryl sulfoacetate, which reduces surface tension. This combination stimulates peristalsis and softens stool, enabling easier evacuation via the rectal route.

Side Effects

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

Common Side Effects

  • Mild abdominal cramping
  • Rectal irritation or burning sensation
  • Transient diarrhea
  • Mild nausea
  • Slight rectal discharge
  • Temporary urgency to defecate

Serious or Rare Side Effects

  • Severe abdominal pain
  • Rectal bleeding
  • Allergic reaction (rash, swelling, difficulty breathing)
  • Electrolyte imbalance with excessive use
  • Persistent rectal ulceration
  • Severe dehydration

Precautions & Warnings

Use Microlax only as directed and consider the following safety measures.

  • Follow label instructions: use the recommended amount for each administration.
  • Avoid in intestinal obstruction: contraindicated if a blockage is present.
  • Check for allergies: do not use if hypersensitive to any component.
  • Caution in pregnancy and breastfeeding: safety not established, consult a healthcare professional.
  • Keep out of reach of children: store securely to prevent accidental ingestion.
  • Store at room temperature: keep in the original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Microlax can interact with other agents that affect fluid or electrolyte balance.

Major Interactions (Avoid)

  • Oral electrolyte solutions: concurrent use may cause significant electrolyte disturbances.
  • Other laxatives or enemas: risk of severe dehydration and electrolyte loss.
  • Antidiarrheal agents (e.g., loperamide): may reduce the intended laxative effect.

Moderate Interactions (Monitor Closely)

  • Diuretics: monitor electrolyte levels and hydration status.
  • Oral anticoagulants: rectal irritation could increase bleeding risk; observe for signs of bleeding.

Frequently Asked Questions

Microlax is an over‑the‑counter rectal enema indicated for the relief of occasional constipation, the treatment of fecal impaction, and for bowel cleansing before diagnostic procedures such as colonoscopy or radiographic examinations.

Sodium citrate creates an osmotic gradient that draws water into the colon, softening stool. Together with sodium lauryl sulfoacetate, which lowers surface tension, the formulation stimulates peristalsis and promotes rapid evacuation of the bowel.

The appropriate dose of Microlax is determined by the prescribing healthcare professional based on the individual’s condition, age and response. Users should follow the instructions on the product label or the guidance provided by their clinician.

Safety data for Microlax in pregnancy and lactation are limited. It should be used only if clearly needed and after consultation with a qualified healthcare provider, who can weigh potential benefits against any unknown risks.

To place an order, submit an enquiry on the Microlax product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any required import documentation.

Compared with oral osmotic laxatives, Microlax provides a rapid, localized effect via rectal administration, avoiding systemic absorption. It is often preferred when quick relief is needed or when oral routes are unsuitable, whereas oral agents may be used for chronic management.

Microlax should be stored at room temperature, below 25 °C, in its original packaging to protect it from moisture and direct sunlight. Keep the container tightly closed and out of reach of children.

Microlax is administered rectally. The patient lies on their left side, inserts the pre‑filled applicator gently into the rectum, and slowly releases the contents. The patient should remain in the same position for a few minutes to allow the solution to work before attempting to evacuate.

Serious risks, though rare, include severe abdominal pain, rectal bleeding, allergic reactions such as rash or swelling, and electrolyte imbalance if used excessively. Any of these symptoms warrant immediate medical attention.

Microlax should not be used by individuals with known hypersensitivity to any of its ingredients, those with intestinal obstruction, severe inflammatory bowel disease, or acute rectal lesions. Children under the age recommended on the label should also avoid use unless directed by a clinician.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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