From the FDA Drug Label
children 16 years of age or under: ask a doctor The FDA drug label does not answer the question.
From the Research
For a 2-year-old child with constipation, the recommended dose of MiraLAX (polyethylene glycol 3350) is typically 0.5-1.5 grams per kilogram of body weight per day, mixed in 4-8 ounces of liquid, as supported by the most recent and highest quality study 1.
Key Considerations
- The initial treatment phase often lasts 3-7 days until regular bowel movements are established.
- For maintenance therapy, which may be needed for several weeks to months, the dose is typically reduced to the minimum effective amount.
- MiraLAX works by drawing water into the intestines, softening the stool and making it easier to pass.
- It's essential to ensure adequate fluid intake while using MiraLAX.
- If constipation persists beyond a week of treatment, worsens, or is accompanied by concerning symptoms like severe pain, vomiting, or blood in stool, consult a healthcare provider promptly.
Important Evidence
- A study published in 2016 found that polyethylene glycol with or without electrolytes is more efficacious than placebo for the treatment of functional constipation, either in adults or in pediatric patients, with great safety and tolerability 1.
- Another study from 2022 highlighted the effectiveness of fiber supplementation, particularly psyllium, in improving constipation symptoms in adults, although the findings may not directly apply to a 2-year-old child 2.
Recommendations
- Always discuss with your child's pediatrician before starting any medication regimen, as they can provide personalized dosing based on your child's specific weight and condition.
- Monitor your child's response to the treatment and adjust the dose as needed.
- Be aware of potential side effects and seek medical attention if you notice any concerning symptoms.