Hi, i have an ear infection and my ear drum ruptured.i've been on amoxicillin and antibiotic ear drops for 3 days. how long till ear stops draining?

Almost over.: Shouldn't be too much longer, if the medicine is working. Most ear infections will heal within 7 days but you should always continue your treatment until the recommended stop date, as cutting it off early can lead to bacterial resistance.

Hard to predict: The initial drainage was likely triggered by the pressure caused by buildup of mucous and pus behind the ear drum. This was released as drainage started.As the antibiotic begins to kill off the germ, the reason for drainage declines and eventually stops. Persistence of drainage after a week would be unusual and prompt a call to your doc.