Hi, Three Doctors In Three Different Countries, All Diagnosing The

Hi, three doctors in three different countries, all diagnosing the same condition otitis externa, but with different treatments. Australian doctor prescribed Sofradex. UK practitioner prescribed Flucloxacillian. Singapore doctor prescribed Augmentin and Polydexa ear drops. I am in terrible pain. How long before the medication starts to work? This is day 6 from the original diagnosis.