Levofloxacin
"Took for sinus infection in 2009. At the time I wasn't warned that strenuous activity could cause permanent damage while on this med. I torn a muscle so bad it wouldn't heal. Immediately began getting neuropathy. It progressed and worsened over time. Now... after 8 years, it's finally taken over my body's nervous system and enlarged trunk lines of nerve paths all over body. Hands are numb, feet are numb, sharp pains all over, torn muscle is now a grizzle and emits sharp debilitating pain. Polyneuropathy is progressing slowing but surely. Had to stop working because of pain. Taking Lyrica and NSAIDs... doesn't help much. At end of road! No cure... doctors says it reminds them of exposure to agent orange...  DO NOT USE THIS DRUG!"