Before taking ZYVOX, tell your doctor if you have high blood pressure, a seizure disorder, a thyroid or adrenal gland disorder, kidney or liver disease, bone marrow suppression, or a weak immune system.
Take ZYVOX for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated.

To be sure ZYVOX is not causing harmful effects, your blood will need to be tested on a regular basis. Do not miss any scheduled visits to your doctor.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.

While you are using ZYVOX, avoid taking an "SSRI" antidepressant without telling your doctor. This includes Celexa, Lexapro, Prozac, Luvox, Paxil, or Zoloft. Taking an SSRI antidepressant together with ZYVOX can cause symptoms such as anxiety, high fever, sweating, chills or goosebumps, memory problems, trouble concentrating, loss of coordination, or muscle spasms.
Eating tyramine while you are taking ZYVOX can raise your blood pressure to dangerous levels. Avoid foods that have a high level of tyramine, such as aged cheeses or meats, pickled or fermented meats, smoked or air-dried meats, sauerkraut, soy sauce, tap beer, red wine, or any meat, cheese, or other protein-based food that has been improperly stored.

You should become very familiar with the list of foods you must avoid while you are taking ZYVOX.