I don't know how... and I don't know why. Unless it's really quiet, I can't hear my T! Not that I am complaining, it needs to be completely gone though. I just wanted to share some positive news. I know I was taking Tinnicare for about 2 months. I just stopped it for about 6 days while on vacation. Seems to almost have vanished the next day after I stopped. Wondering if it's working and if I should just finish the next couple of bottles I have and take it from there. Thoughts?