OxyPowder question

Hey, I am not sure if this is the right place to post this or not, but I"m about to start Oxypowder , and I take BC pills for extremely painful periods. I'm wondering if Oxypowder will prevent the BC pills from being absorbed. The Oxypowder manufacturer says that it supposedly doesn't cause diarrhea, but I've heard cases of people getting diarrhea from this product, so I am concerned about the oxypowder flushing out my pill.
Thanks!
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