Need to know about the CBD oil for our pets. Is it good for pets? Need expert recommendation.

Recently, I bought CBD oil for my Tommy from an online store.  You know there are many stores for CBD oil for pets. But my question is, is it good for my pets? Because some of my friends told me that these are so much dangerous for pets some of them are told me that these are okay, not bad at all. 

Some of them told me that this is a homeopathic medicine that's not good for 2018. That is an old version. We should take traditional medicine for our pets. Some of them are told me that these will be the good if you maintain the rules exactly for your dogs. Now, I'm so much confused. What is the right information?