IF your dog IS senstive to rasins, it may take several hours
for the "symptoms" of illness to develop.

I'd CALL YOUR VET IMMEDIATELY and ask what they recommend.

If they suggest you make the dog vomit up the material >>>

To Induce Vomiting and Prevent Poison Absorption

Giving the dog Hydrogen Peroxide will induce the dog to vomit. A 3 percent solution is most effective. Give one teaspoon per 10 pounds of body weight of the dog. Repeat every 15 to 20 minutes, up to 3 times, until dog vomits. Syrup of ipecac has been recommended in the past, but Hydrogen peroxide is a better choice for dogs. Syrup of ipecac is only effective 50% of the time and can be dangerous to dogs.

Once the dog has vomited the poison from his/her stomach, activated charcoal should be given to bind any remaining poison and prevent further absorption . The most effective and easily administered home oral charcoal product is compressed activated charcoal which comes in 5 gram tablets. The dose is one tablet per 10 pounds of body weight. If charcoal is not available, coat the intestines with milk and egg white using 1/4 cup egg white and 1/4 cup of milk per 10 pounds of body weight. Give this mixture by mouth using a syringe into the cheek pouch. Once this is completed, rush the dog to the emergency veterinary hospital and inform them of what measures you have taken to treat the poisoning.