Hello, thanks for your question today! I am Dr. Drew, and I am a licensed veterinarian. I'll be happy to help you in any way I can.
Piriton is safe to use.
You can give 1/2 of a 4mg tablet (2mg), every 12 hours, as needed.
this is generally well tolerated in dogs, side effects typically only include some drowsiness and dry-mouth as in people.