golden retriever sick/vomiting

Question
i have a purebred golden retriever.....hes just turned 14
yrs old....hes had repeated vomiting over the last 3 days,
our vet told us to wait till monday because its a weekend
and take him in if it persists and it has in the matter of 3
days hes thrown up more than 15 times.....what is wrong with
him, and what can we do?

Answer
A younger dog I would suspect it foraged something that upset it.  There are a number of other possibilities with an older dog that there is little you can do your self.  You could try a bland diet.  

If a dog is having trouble keeping anything down or continuing diarrhea try this out of the manual I have from a large, knowledgeable dog guide school.

Bland recovery diet for dogs.

3 parts cooked rice, one part boiled hamburger or chicken, or cottage cheese. I think you can substitute boiled potatoes for the rice. Once in an emergency, we bought a plain baked potato from Wendy's.

This is meant for short time settling a dog's digestive tract. It is not the complete and balanced diet they need long term. I have seen it work.