Morgan finished a 7 day course of antibiotics for her ear infection and it didn't clear up at all, so we are now on, basically a z-pak but a liquid one. It's stronger and I hope it kicks the crap out of this ear infection. We switched mid course when she was 1 1/2 months old because whatever the hospital gave her she may have been allergic to. She was on two different antibiotics at that time so we aren't sure which one it was. But she was fine, just had a bit of loose poop after that but nothing too bad.
We have not had to switch mid course recently so I can't say what would happen now but if you are concerned I would try to get in to see the doctor first, before just getting a new medicine.
For DD's last (only) ear infection, they didn't give us antibiotics and said that it would clear on its own within the week. We went in on Monday and by Thursday noticed that it better enough that she was acting normally again. If it's not getting better, maybe another one would work better?
We were on 4 different antibiotics for an ear infection that still didn't totally clear. Amoxicillin didn't seem to help and she developed a rash after taking cefdinir. The z-pack was the fourth. We changed mid course twice. We went to see an ENT doctor and he said most ear infections are viral but pediatricians prescribe antibiotics anyway. He also said they will generally clear out on their own. He told us we are not risking permanent damage by letting her body work through it so that is what we decided to do. The problem is that with her getting one cold after another her ears never drain.
After all this my general opinion is that antibiotics are over prescribed and I will not be giving antibiotics for an ear infection again unless she develops a high fever.
Edit to add - If it were me I would want to take her in to have her ears checked before switching an antibiotic because I thought it wasn't working. Like you said there could be other things going on.
Re: Switching antibiotics? Opinions while waiting for lunch to be over...
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After all this my general opinion is that antibiotics are over prescribed and I will not be giving antibiotics for an ear infection again unless she develops a high fever.
Edit to add - If it were me I would want to take her in to have her ears checked before switching an antibiotic because I thought it wasn't working. Like you said there could be other things going on.