AquaEar, or whatever you use for 'swimmer's ear'.
Medicinal Alchohol pretty much, it dries up the moisture and kills the bacteria. (apply it directly into the effected ear, leave it sit for a minute or so then drain by tilting head to one side....what doesnt drain out immediately will evaporate very quickly)
It also feels like someone is cleaning out your head with a gas axe.
Hurts like you wouldnt believe for a few seconds, then goes kinda hot and numb at the same time.
It is designed as a preventative measure, but I have found it to work extremely well in clearing up an inner ear infection....be warned though, I am deadly serious about how much it hurts, that part I cannot overstate.
Had inner ear infections on and off since I was a small boy, havent had to see a doctor about it in years, if it shows up i zap it with Aqua-ear and all is good.
You have my sympathy, they arent much fun.