Zyvox is an antibiotic that treats severe bacterial infections that are resistant to other antibiotics, according to WebMD. This medicine is typically taken every 12 hours by mouth.
Common side effects of Zyvox include constipation, headache, diarrhea, vomiting and dizziness, notes WebMD. Serious side effects include mental changes, uncontrolled movements, altered breathing and drowsiness, and a doctor should be notified immediately if any of these occur. Zyvox may cause issues for individuals with blood disorders, high blood pressure, untreated overactive thyroid diseases and seizure conditions. Alcoholic beverages should be limited while taking this drug. To avoid overdosing, a missed dose of Zyvox should not be doubled.