Ivermectin + Pyrantel (Heartgard Plus) side effects in Chihuahuas

2,196 FDA reports involve Ivermectin + Pyrantel in a Chihuahua. These are the problems they describe.

Vomiting
640 29%
Didn't prevent heartworm
509 23%
Lethargy
276 13%
Diarrhea
250 11%
Didn't stop worms
240 11%
Didn't work as expected
212 9.7%
Loss of appetite
185 8.4%
Digestive tract disorder
130 5.9%
Tremors
95 4.3%
Seizures
94 4.3%
Cardiac disorder
90 4.1%
Itching
86 3.9%

All reports for Ivermectin + Pyrantel in dogs