It depends on the severity of the ear infection, but the current standard of care in the US is "watch and wait". Studies have shown that antibiotics only shorten the duration on average by 1 day, and it's just as safe to initially treat for pain only, resorting to antibiotics only if there is no sign of improvement within 2-3 days. This isn't some whacky new age thinking...mainstream pediatricians preach it.
If I could re-do one decision as a parent, it would be to question the trigger for ear infections when my oldest two were babies. They both had constant ear infections, always treated with antibiotics which treated the symptoms but not the underlying cause. My second ended up with a permanent hole in his ear that had to be surgically fixed and has permanent hearing loss. His trigger is dairy allergy. Even now--at almost 18--if he eats dairy while he has a cold, he gets an ear infection.
But back to your original question: get some infant probiotics to counteract the effect of the antibiotics on the good gut flora.
Zone diet on and off for several years....worked, but too much focus on exact meal composition
Primal since July 2010...skinniest I've ever been and the least stressed about food