i finished my 30 days of doxy for lyme feel a little better but not back to normal..still ways to go before i get better this drug has a lot of side effects but i really had no other choice stuck with it and feel better.but still have rapid heart beat,fatigue,weak,light headed..my dizziness is gone it still sounds bad but i do feel a lot better than i was. i was a complete mess my advice is to stick it out if u could and see what happens but if you have more choices i would try something else i had no alternative..