Suggested dosage is: 20lbs or less 1 1/2 milligrams 40lbs - 100 lbs 3 milligrams over 100 lbs 6 milligrams This dosage can be given up to 3x's a day. It's not effective in all cases but when it works it works and warnings on the label should be heeded. Janice, janices@austin.rr.com Lana & Linsey (newfs), Sonny (pyr) http://home.austin.rr.com/janices Hutto, TX