Usual Adult Dose of MiraLAX for Constipation:
17 g (diluted in 8 fluid ounces water, juice, soda or coffee) orally once a day
Usual Pediatric Dose for Bowel Preparation:
Occasional constipation:
Children greater than 6 months of age: 0.5 to 1.5 g/kg daily (initial dose 0.5 g/kg; titrate to effect)
Maximum dose: 17 g/day
Fecal impaction:
Children greater than 3 years of age: 1 to 1.5 g/kg daily for 3 days
Maximum dose: 100 g daily
Bowel preparation:
Children greater than 2 years of age: 1.5 g/kg/day
Maximum dose: 100 g daily
Usual Pediatric Dose of MiraLAX for Constipation -- Acute:
Occasional constipation:
Children greater than 6 months of age: 0.5 to 1.5 g/kg daily (initial dose 0.5 g/kg; titrate to effect)
Maximum dose: 17 g/day
Fecal impaction:
Children greater than 3 years of age: 1 to 1.5 g/kg daily for 3 days
Maximum dose: 100 g daily
Bowel preparation:
Children greater than 2 years of age: 1.5 g/kg/day
Maximum dose: 100 g daily
 Detailed MiraLAX dosage information
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
