Ivermectin + Pyrantel (Heartgard Plus) side effects in Welsh Pembroke Corgis

236 FDA reports involve Ivermectin + Pyrantel in a Welsh Pembroke Corgi. These are the problems they describe.

Didn't stop worms
74 31%
Didn't work as expected
54 23%
Vomiting
50 21%
Digestive tract disorder
49 21%
Didn't prevent heartworm
37 16%
Diarrhea
25 11%
Lethargy
19 8.1%
Itching
12 5.1%
Behaviour change
9 3.8%
Loss of appetite
8 3.4%
Death
7 3.0%
Tremors
6 2.5%

All reports for Ivermectin + Pyrantel in dogs