Mesalazine

Mesalazine, also known as mesalamine or 5-aminosalicylic acid (5-ASA), is an anti-inflammatory drug used primarily to treat inflammatory bowel disease (IBD), including ulcerative colitis and mild-to-moderate Crohn's disease. It acts locally in the gut wall to reduce inflammation and associated symptoms.

Dosage by Body Weight

Dosage depends on the disease state, severity, and the specific drug formulation (e.g., delayed-release vs. extended-release). Swallow tablets/capsules whole; do not crush, chew, or break them, as this destroys the enteric coating. Pediatric dosing must be carefully calculated based on body weight and clinical response.

  1. Body Weight
    Below 5 kg
    Dose
    Not recommended
    Frequency
    Do not use
    Tracking Notes
    Safety and efficacy have not been established in patients weighing less than 5 kg.
  2. Body Weight
    5-7 kg
    Dose
    Not established
    Frequency
    Consult pediatrician
    Tracking Notes
    Dosing is not routinely established for this weight range. Use only under strict specialist supervision.
  3. Body Weight
    8-10 kg
    Dose
    Not established
    Frequency
    Consult pediatrician
    Tracking Notes
    Dosing is not standard. Specialty formulation and close clinical monitoring are required if prescribed.
  4. Body Weight
    11-15 kg
    Dose
    150 mg to 300 mg daily
    Frequency
    Once daily or divided into 2 doses
    Tracking Notes
    Calculated based on standard pediatric maintenance dosage of approximately 15-30 mg/kg/day. Use appropriate granule or liquid forms where available.
  5. Body Weight
    16-20 kg
    Dose
    300 mg to 500 mg daily
    Frequency
    Once daily or divided into 2 doses
    Tracking Notes
    Calculated based on standard pediatric maintenance dosage. Adjustments may be made by the specialist for active disease treatment.

Formulation

Delayed-release TabletExtended-release CapsuleSuppositoryRectal EnemaProlonged-release Granules

Purpose

Treatment of mild to moderate active ulcerative colitis and maintenance of remission of ulcerative colitis.

Generic Name

Mesalazine

Branded Drug Names

Mesalazine is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.