Doxycycline
"I just tested positive for my lymes western blot end of August. Started doxcycline 100 mg two daily for 21 days. It is a terrible medication! My belly hurt whether I ate or on an empty stomach and I would get the diarrhea.  I talked to my niece who is a pharmacist about it. She told me to start taking a probiotic  3 everyday. Once I started taking the florajen 3 all my terrible symptoms from the doxcycline disappeared! It's wonderful now! Don't mind take the medication at all now. I sure hope it helps. I still don't feel like myself. Some days are good and some days are bad. Good luck everyone. Hope this helps you all."