He is still doing great on pheno. No side effects so far. If you forget to take a dose of your antibiotics, take that dose as soon as you remember and then continue to take your course of antibiotics as normal. Can I Give Keppra An Hour Early To My Dog? When my border collie started having seizures about a year and 2/3 ago, Keppra was our first line drug to try. With epilepsy and seizures becoming an epidemic among dogs.