My little boy has just been release from PICU due to ingesting visine... A word of warning for parent who leave things like thin in their purses or on the coffee table. A dose as small as 5ml can KILL a 2yr old child. I had Visine in my backpack and my son got a hold of it while I wasn't looking. I am not the type of parent that regularly leaves ANY type of med lying around. Visine has Absolutly no Child resistant packaging. I didn't think that it was all that dangerous until I found my little boy on the flor of my living room in respiratory arrest. Please be careful.