It is my understanding that overdosing on CBD oil (as long as it has no THC) is unlikely.
Can A Dog Overdose On CBD Oil (honestpaws.com)
I have used it both long term for chronic conditions and on an as needed basis, (dosed at 2 mg. CBD per 10 lbs. body weight, twice a day (as per my vet)) for my dogs, and have never run into any problems with it.
Can A Dog Overdose On CBD Oil (honestpaws.com)
I have used it both long term for chronic conditions and on an as needed basis, (dosed at 2 mg. CBD per 10 lbs. body weight, twice a day (as per my vet)) for my dogs, and have never run into any problems with it.