Moxidectin (ProHeart 6) side effects in Mastiffs

246 FDA reports involve Moxidectin in a Mastiff. These are the problems they describe.

Didn't prevent heartworm
81 33%
Didn't stop worms
42 17%
Vomiting
38 15%
Lethargy
27 11%
Swelling
27 11%
Loss of appetite
22 8.9%
Allergic reaction
18 7.3%
Diarrhea
15 6.1%
Injection site reaction
14 5.7%
Seizures
12 4.9%
Death
12 4.9%
Didn't work as expected
10 4.1%

All reports for Moxidectin in dogs