My vet rxd it for my 40 pound ish dog as 1/8teaspoon every 12 hours. A fecal flotation is a test to find the eggs in the stool. Not always 100 percent accurate. I just recently did every one with panacur and she did a not get a bit of an issue from it. Interceptor never bothered her but the ivermectin based heartworm preventatives do. We would deal with it for the day. I did find that it is not as much of an issue once the food issue was dealt with
Now we just mske sure to give her natures variety raw on the day of treatment and for the day following..no more major issues. When at her worst she would lose weight despite being fed high volumes of food which made it worse. Her weight now is petfect with out fluctuating.
