I was prescribed a muscle relaxant and antibiotic and they were contraindicated. I spent a month in bed not realizing the dr dr I had was an interaction. I fainted three times always hitting my head but last time it happened I was on a tile floor. I got a concussion, whiplash, and could have messed up my hardware in my neck. I even checked with pharmacy and they said these wouldn't interact. This was frightening. Make sure you check online to each drug manufacture websites to check you all your meds. Accidents happen and drs and pharmacists can make one that could mess you up even worse. manufacturer why pharmacists don't catch this a it happens often with these two drugs. So beware!!!!!!