My 4yo was vomiting off and on for 6 days. She has been vomit free for 3 days but constipated. Is it safe to start miralax (polyethylene glycol) again?

Yes. Since your child has been asymptomatic for the last 3 days and feeling better I see no reason why you cannot restart Miralax (polyethylene glycol). Remember to continue to provide a well balanced diet high in fiber if your child has chronic issues with constipation. Also encouraged increased hydration with water and lots of physical activity. Hopefully should improve over time.

Related Questions

5 year old w/pain in belly button area. Already tried miralax (polyethylene glycol) and had x-ray. No fever or vomitting but pain is getting worse especially at bedtime.?

Stomachache. Did the x-ray show impacted stools? Is he regular going to the bathroom? Does he hold his poops? During the day, he's probably too busy and isignoring the pain. With the history you have supplied, his doctor has probably examined him. It looks like he is constipated. Continue giving him the MiraLAX (polyethylene glycol) but add more fluids (water, prune juice) and fiber (fruits, vegetables, cereals, bran). Read more...

10 year old constipation with vomiting almost a month now. Dr said miralax (polyethylene glycol) enema suppository. None working. Fired pediatrician. Options?  

Gastroenterologist. The basics may be the same. Dietary changes such as increasing water intake and fiber may help. For some people a structured bowel regimen is helpful. Good luck and find a doctor to work with. Read more...
Dietary, lifestyle & psychosocial issues contribute to chronic functional constipation in school-age kids, See m.hopkinsmedicine.org/healthlibrary/conditions/pediatrics/constipation_in_children_90,P01986/. If abdominal X-ray shows the need, oral Golytely is given for "clean-out", then daily Miralax (polyethylene glycol) for at least 6 mos. Vomiting may also be stress-related; rarely a GI disease can cause both. See a Pediatric GI doctor. . Read more...
Rehire/find a doc. These are often a year+ long battle even when done correctly. The kid may need a pedi gastroenterologist and or a developmental pediatrician to educate you/him on the way to get past this issue. It can be helped but you/he need to keep at it until you understand how it developed and how you fix it. Read more...