If the infection
has lodged in
the upper sinuses, sometimes the antiobiotics won't reach it, due to poor blood circulation. A neti pot or Neilmed Sinus rinse
, which are ordinarily very effective, won't reach it either, because gravity it stronger than that. I invented the Flip-turn sinus flush, which actually uses gravity, to get saline into the upper sinuses, and flush out the infected mucus
, which usually solves the problem.