THIS is on the Karma of all the doctors who let me fall!! Only 30 days worth of 100 mg. Doxycycline, would have cured me!! $75.00 worth of medicine!! I am here now...White brain lesions on an MRI, caused by the Lyme spirochete. Left untreated they bore into the brain and live in clusters where they multiply, causing every kind of symptom and organ failure. This is a true modern horror story! If you get a summer flu or find a tick bite or a bulls eye rash...insist on Doxycycline.