How Quickly Should Dulcolax And Miralax Show Results?

Posted on Mon, 28 Oct 2013

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Mon, 28 Oct 2013 Answered on

Sun, 17 Nov 2013 Last reviewed on

Question : How quickly should Dulcolax and Miralax show results? My wife has been told to take both before a colonoscopy.

Answered by Dr. Het Ram Bishnoi (59 minutes later)

Brief Answer:
Purgative action .

Detailed Answer:
Hello, XXXXXX
Dulcolax ( bisacodyl) is a purgative , it alone take usually 6-8 hours for its action.
When combine with miralax (polyethylene glycol) , it will take 4-6 hours . As glycol helps in evacuation & increase the intestine motility.
So you have to wait for 4 -6 hours.
Good luck. Dr. HET

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Above answer was peer-reviewed by : Dr. Prasad