Ivermectin + Pyrantel (Heartgard Plus) side effects in Dutch (keeshond) Spitzs

85 FDA reports involve Ivermectin + Pyrantel in a Dutch (keeshond) Spitz. These are the problems they describe.

Didn't stop worms
30 35%
Didn't work as expected
23 27%
Didn't prevent heartworm
14 16%
Digestive tract disorder
14 16%
Diarrhea
8 9.4%
Vomiting
7 8.2%
Loss of appetite
6 7.1%
Cardiac disorder
4 4.7%
Itching
3 3.5%
Behaviour change
3 3.5%
Lethargy
3 3.5%
Death
3 3.5%

All reports for Ivermectin + Pyrantel in dogs