Treatment may require inducing vomiting, stabilizing the animal's heartbeat and respiration, controlling seizures and slowing the absorption of theobromine. If the animal already is comatose, its stomach may need to be pumped. Theobromine does not completly leave the dogs system as do some foods, my research informs me that it can store for up to a week. The theobromine in other sweets and biscuits, cakes, coated in chocolate or with chocolate chips etc. will be less of course, but its wise to avoid all these things. Health food shops also stock, none chocolate choc drops for humans, I am told these are fine, but, its good practise to ask for the ingredient list to check for theobromine.
Ingredients can change without notice.
As in all case of animal safety, ask your vet, this page is no exception, dont take my word as being accurate. All dogs can be different, as are humans, it may be there is a dog out there that could be killed by the smallest dose of chocolate. This page does not suggest that any dose is safe. Ask your vet. I wrote to Good Boy because they do not state on their packets of choc drops what the full ingredients are.