Ivermectin + Pyrantel (Heartgard Plus) side effects in Shih Tzus

2,048 FDA reports involve Ivermectin + Pyrantel in a Shih Tzu. These are the problems they describe.

Vomiting
581 28%
Didn't stop worms
439 21%
Didn't work as expected
369 18%
Digestive tract disorder
260 13%
Lethargy
232 11%
Didn't prevent heartworm
223 11%
Diarrhea
221 11%
Loss of appetite
140 6.8%
Itching
101 4.9%
Seizures
82 4.0%
Tremors
72 3.5%
Restlessness or agitation
62 3.0%

All reports for Ivermectin + Pyrantel in dogs