I am a USA Professional Dog Trainer 30+ years…
And only have used Revolution or Stronghold on my Dogs. I was happy to receive it in the 14 days as promised.
The Isoxazoline flea meds Simparica, Nexgard, Bravecto, Credelio… along with Advantage and Frontline, Trifexis and Pet Armor I continue to see very often sad debilitating side effects.
Do the multidrug sensitivity test for the MDR1 mutant gene first.