This registry is a place to share positive or negative side effects of using Doxycycline Hyclate. If you directly experienced a side effect while using Doxycycline Hyclate, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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May 4th
2004
7:20 AM
My 16 year old son has been taking Doxycycline for Acne. I noticed he has been more angry and verbally aggressive. Has any one else seen this as a side effect or should I be looking for some other cause? Since he stopped taking it, he has been much more reasonable.
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