Welcome to JustAnswer! I am a licensed veterinarian and would be glad to help!
Triflexis contains spinosad and milbemycin. Spinosad can cause a digestive disturbance in regards XXXXX XXXXX reaction.Rarely we can see neurological problems in dogs given milbemycin, but that would be uncommon.
There is no specific therapy for a reaction, rather supportive care if needed for a digestive disturbance.
She did vomit a bit earlier, didn't think much about it at the time. If her tummy was empty could it have affected her? Also it has been about 8 hrs. since she had the Triflexis.
Yes - it is possible and a bland diet would be considered - boneless/skinless chicken and white rice for example.
Otherwise, it is quite rare that a Triflexis reaction is severe enough to be life threatening and mostly self-limiting, meaning resolving with supportive care over time.
Ok, I'll just keep watching her and see if she is interested in the chicken and rice. It is just so unlike her to be laying around. She is a super active girl. Thank you so much for the reassurance. What a great service for on weekends. Jean