Doxycycline side effects in Chihuahuas

115 FDA reports involve Doxycycline in a Chihuahua. These are the problems they describe.

Didn't prevent heartworm
51 44%
Vomiting
22 19%
Loss of appetite
20 17%
Lethargy
11 9.6%
Blood problems
10 8.7%
Swelling
10 8.7%
Injection site reaction
9 7.8%
Diarrhea
8 7.0%
Seizures
8 7.0%
Death
8 7.0%
Weight loss
7 6.1%
Weakness
6 5.2%

All reports for Doxycycline in dogs