I couldn't agree with MYoungAtHeart more. I agree that you should call your vet before you give your dog ANYTHING which could possibly harm him.
While you wait for your appointment or call back from the vet, you could post your question on our Dog Forum. The link is below.
I know how anxious we can get over our pets health, but we have to always think of their safety first.
Peace
Greenlydia
http://www.medhelp.org/forums/Dogs/show/4