can i use zymaxid in place of vigamox? ## They are two different medications, though they treat the same conditions. Zymaxid contains Gatofloxacin and Vigamox contains Moxifloxacin. Learn more Zymaxid details here. Learn more Vigamox details here. Your pharmacy can't just make a switch though, your doctor would have to approve it. There might be a reason they prefer one over the other, since some are found to be better at treating certain conditions. Which one have you been prescribed? ## My 21 month old son has a bacterial eye infection & was prescribed Vigamox. However the insurance pharmacy I go to only covers Zymacid & I am very hesitant in using it & am just thinking of purchasing the eye drops.