Diphenhydramine side effects in Miniature Schnauzers

65 FDA reports involve Diphenhydramine in a Miniature Schnauzer. These are the problems they describe.

Vomiting
25 38%
Lethargy
20 31%
Allergic reaction
18 28%
Loss of appetite
15 23%
Itching
14 22%
Diarrhea
12 18%
Swelling
11 17%
Skin redness
7 11%
Breathing problems
7 11%
Liver problems
7 11%
Pale mucous membrane
6 9.2%
Didn't work as expected
6 9.2%

All reports for Diphenhydramine in dogs