From the Research
For a 2-year-old child weighing 14.2 kg, the recommended dose of MiraLAX (polyethylene glycol 3350) is approximately 0.5-1.5 g/kg/day, which would be about 7-21 grams per day, with a practical starting dose of 8.5 grams (about half a capful) once daily mixed in 4-6 ounces of liquid, as supported by the most recent and highest quality study 1.
Key Considerations
- The dose of MiraLAX should be individualized based on the child's response to treatment and should not exceed 1.5 g/kg/day.
- MiraLAX works by drawing water into the colon to soften stool and increase bowel movements, and it is essential to ensure the child stays well-hydrated while taking this medication.
- The powder should be completely dissolved in juice, water, or another beverage before giving it to the child.
- Effects typically begin within 24-72 hours, and if constipation persists after 3 days or worsens at any point, a healthcare provider should be consulted.
Important Safety Information
- This medication should not be used for more than 7 consecutive days in young children without medical supervision, as prolonged use may lead to dependence or electrolyte imbalances, as noted in various studies 2, 3, 4, 5.
- 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, as reported in a systematic review 1.
Administration and Monitoring
- The child's response to treatment should be monitored closely, and the dose adjusted as needed to achieve the desired effect.
- Parents or caregivers should be instructed on how to properly administer the medication and monitor for any adverse effects.
- Regular follow-up with a healthcare provider is essential to ensure the safe and effective use of MiraLAX in children.