| Term | Definition |
| cell wall inhibitors | pennicillins, vancomycin, cephalosporins, carbepenums, isoniazid |
| allergic reaction | frequent side effect of antibiotics |
| c diff infection | causes bowel inflammation and semi-solid or liquid stools |
| cephalosporins | may interfere with vitamin K metabolism and prothrombin levels |
| tetracyclines | cause discolorations of teeth and photosensitivity |
| macrolides | metabolized via CYP 3A4 pathway |
| aminoglycosides | may cause nephrotoxicity and ototoxicity |
| sulfonamides | may cause blood abnormalities, rash, and urine crystallization |
| fluroquinolones | should not be taken with a multivitamin and may cause dysrythmias |
| penicillins | one of the safest classes, but most frequently causes allergic reaction |
| superinfection | a secondary infection caused when host flora is destroyed |