Doxycycline side effects in Beagles

120 FDA reports involve Doxycycline in a Beagle. These are the problems they describe.

Didn't prevent heartworm
63 53%
Vomiting
18 15%
Breathing problems
14 12%
Lethargy
14 12%
Didn't work as expected
12 10%
Loss of appetite
12 10%
Diarrhea
11 9.2%
Pain
10 8.3%
Cough
9 7.5%
Liver problems
9 7.5%
Didn't stop worms
8 6.7%
Swelling
8 6.7%

All reports for Doxycycline in dogs