For Constipation The effects of this laxative are very unpredictable. Sometimes I can take 2 tabs and not go for 24 hours, or it works fine the next day. You can. This will be the day-before-colonoscopy regimen as opposed to the split-dose regimen. Also, 6 hours between the first dose and the 2nd dose is preferred. I am having my test today at noon. The last time I took the prep which was 12 years ago I was so sick I just vomited my guts out for hours. I had to cancel the test. Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Cattano on amitiza and miralax: Require time and plenty of fluids; otherwise, they can add to the constipation problem. Are you taking any meds that might cause constipation (narcotic pain meds are notorious for constipating). Have you used laxatives for a long time? Dulcolax Tablet is used in the treatment of and Constipation. View Dulcolax Tablet (strip of 10 tablets) uses, composition, side-effects, price, substitutes, drug interactions, precautions, warnings, expert advice and buy online at best price on 1mg.com Constipation medications are available in over-the-counter and prescription versions. Find out which options might work well for you. Seven Days Before Colonoscopy: Purchase a Suprep kit (prescription) and 4 dulcolax laxative tablets (over the counter) from your pharmacy. Stop taking Motrin, Nuprin, Advil, Aleve, Gingko Biloba products or Vitamin E. Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Fowler on how often can you take ibuprofen 200mg: states Dulcolax can be taken Occasionally as needed for constipation. Question Posted by: Winnie | 2013/02/22 M ovicol. Hi there This last week I have been constipated off and on. On monday night I took dulcolax and after 4 hours had the most horrific cramps and it. User Reviews for Dulcolax to treat Constipation. The following information is NOT intended to endorse drugs or recommend therapy. While these reviews might be helpful, they are not a substitute for the expertise, skill, knowledge and judgement of healthcare practitioners in patient care.