Hello,
What dose of Benedryl are you giving?
What is the dog's weight?
Joan
The normal dosage for Benedryl is 1-2 cc or mgs per pound of body weight every 12 hours. The problem is that she was underdosed with the Benedryl, so it is wearing off. She could actually take 1/2 a bendryl tablet every 12 hours. or two teaspoons full every 12 hours as a maximum dosage of 2mgs or cc's. Since this is so bad if she has not had any Benedryl today you can try giving it to her at 1-2 mgs per pound of body weight. This should help. Allergies can be inhaled, ingested or a contact allergen. She may be getting affected when she goes outside. I would see the Vet tomorrow and use the Benedryl today to help give her relief. I hope this will put your mind at ease and the Benedryl will make her sleepy, but should help her to feel better. Joan
Vet. Tech.
I am a Vet Tech for over 30 + years and have four rescued dogs of my own