Hello,
The Reaction should go away in a couple of days. The normal time if she actually got Kennel cough is about 14 days to run its course. The Benedryl will aid in the allergic reaction and the Robitussin Dm will help calm the cough and the antibiotic will care for a secondary infection. I would also take LuLu into the bathroom after you have steamed it up. This will help with openeing the breathing passages and give her some relief. You can also open a Jar of Vicks Vapor Rub in the room where she is staying. They Vapors seem to help ease the coughing as well. If you find that the cough has not stopped by Tuesday, at that time I would have her in for a recheck. Joan
http://www.thepetcenter.com/gen/kenc.html
http://www.peteducation.com/article.cfm?cls=0&cat=1469&articleid=1395
Vet. Tech.
I am a Vet Tech for over 30 + years and have four rescued dogs of my own