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Originally Posted by pstinard  Interceptor Plus (2-8 lbs.) contains Milbemycin Oxime (2.3 mg) and Praziquantel (22.8 mg). Trifexis (5-10 lbs.) contains 140 mg spinosad and 2.3 mg milbemycin oxime. They both have the same amount of milbemycin oxime in common, but the other ingredient is different. I don't know which ingredient in Trifexis gives dogs the bad reactions. Does anyone know or have any recommendation? |
I heard it was two of the medicines that don't mix well.