Amikacin by IV. Mine was administered at the hospital infusion lab 3 times per week. It takes an hour. I made my appointments at 11:40 so the fed me a free lunch each day. It was very expensive, $50 for the medicine but $700 to administer it each day, so over $25000. I did OK until the 5th or 6th week then went extremely dizzy to the point of winding up in the ER for suspicion of a stroke. The Dr cut the dosage from 500mg to 400mg and it was a little better, but I could not drive, etc. Once the 12 weeks was up, the dizziness went away,thank God. I did suffer from some Tinnitus also. Did it help? No definitive answer was ever given.