Kenzie, my 5 year old Sheltie, is due to have major resorptive root surgery on Oct.1. Due to her drug sensitivity, I'm panicking over the anti-inflammatory and/or pain drugs they may give her after the surgery. The dental vet specialist who has been practicing 30 years has only dealt with 'about a dozen' dogs with MDR1 mutations. Does anyone have a mutant/normal Sheltie who tolerated an anti-inflammatory and/or pain killer well? Thanks in advance for any ideas!