Wasp bites can cause serious anaphylactic reaction. If your dog is having trouble breathing, vomiting, or becomes very lethargic take him to a veterinarian immediately--this could be life threatening. Ideally this dog should see a veterinarian because injectable treatment will work faster and is more effective.
At home you can try giving Benadryl at a dose of 1 milligram per pound of body weight given by mouth three times a day for 2 days. Do NOT give Cold and Sinus variety--only plain Benadryl is safe.
At home you can try giving Benadryl at a dose of 1 milligram per pound of body weight given by mouth three times a day for 2 days. Do NOT give Cold and Sinus variety--only plain Benadryl is safe.