Selamectin (Revolution) side effects in Mastiffs

65 FDA reports involve Selamectin in a Mastiff. These are the problems they describe.

Didn't prevent heartworm
22 34%
Loss of appetite
8 12%
Didn't stop worms
7 11%
Vomiting
7 11%
Diarrhea
6 9.2%
Didn't stop fleas
5 7.7%
Didn't work as expected
5 7.7%
Lethargy
5 7.7%
Itching
4 6.2%
Drooling
4 6.2%
Application site reaction
3 4.6%
Seizures
3 4.6%

All reports for Selamectin in dogs