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Bisacodyl tablets, when swallowed whole, generally take 4 to 12 hours before producing a BM. For most people, if the tablets are taken at bedtime, say 10 or 11pm, then by the time you wake up and get out of bed, say 7 or 8pm, you will feel cramps in your abdomen and it will be time to sit on the toilet for a while.

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Q: If you take the Bisacodyl tablets at noon how long will it take to start working?
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