I have used the monastat - did no good --- for the Vent Gleet ----- my Checkers is 1 and 1/2 yrs old. Had the vet order the Nystatin, at $70.00 per bottle -- which I had read would cure Vent gleet - been using for 2 weeks - giving her 1 cc - 3 times per day. I have no improvement. Does...