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Asked to take miralax before lab test. will there be any side effect?

I took 2 capfuls of Miralax as a prep for lab tests this a.m.. I was told to drink lots of water when I got home. What would be the reason and would there be a problem if I didn t ? This was recommended by the laboratory. Could you tell me if 2 capfuls would cause any side effects or cause any discomfort or what I may expect PLEASE?
Asked On : Tue, 26 Mar 2013
Answers:  1 Views:  28
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General & Family Physician 's  Response
Miralax ( polyethylene glycol) is a laxative. there is no harm if you have taken two capsules of the same. They should have advised you to take the capsule at bed time as it would be convenient for you to pass stools in the morning without any discomfort. You have already taken 2 capsules there is no issues. The reason why they have asked to drink more water is becoz the drug acts on the fecal mass by osmotically drawing water into the GI tract and softening it to an extent.
Minor side effects like nausea, gas and bloating might be noted but they will go off as the action of the drug wears off..
Answered: Tue, 26 Mar 2013
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