I have a question about which IV meds cause burning at the site during infusion? I'm aware that potassium is one of those, which others? Also, What's the difference between vesicant and irritant medications? I had a patient infiltrate last night but was getting IV ciprofloxacin and one of the seasoned nurses said it didn't seem that med or infiltrate was that concerning to call the doc about.Another question that has been on my mind is how do you administer sleep aids, pain meds or antidepressants? For example if a patient wants a sleeping pill and pain med at same time, do you wait an hour between or give together? Same as for sleep aid and antidepressant? With pain medication, the sustained release of morphine or oxy sr, is it okay to give an immediate pain med at same time such as iv morphine or oxy ir whichever is ordered? I know the sustained release doesn't kick in for a few hours so I would believe that giving immediate and sustained at same time would be fine. Or do you wait an hour or two between? These questions have been bugging me and I would like to hear advice from experienced nurses. Thanks so much!