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A member asked:

How long does it take for doxycycline to cause diarrhea?

A doctor has provided 1 answer

Soon: Usually within the first 72 hours.

Answered 9/28/2012

5.6k views

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A member asked:

So I stopped taking Doxycycline Hyclate due to developing certain symptoms such as decreased appetite, pain slightly above my belly button, stomach pain for diarrhea which turned my stool black and I have constipation should I be worried?

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