Is It Normal for Miralax to Take 3 Days to Work?

Yes, it's completely normal for Miralax to take 1-3 days to produce a bowel movement. Miralax (polyethylene glycol 3350) works by drawing water into the intestines to soften stool, a gentle process that requires time. Most people experience relief within 12-72 hours, with the average being 24-48 hours. The medication doesn't stimulate bowel muscles like other laxatives, which is why it works more gradually. Factors like hydration level, diet, and individual digestive function can influence timing. If you haven't had a bowel movement after 3 days of use, or experience severe cramping or bloating, consult your healthcare provider to rule out underlying issues.