I'm old I could tell you stories. You have to be cautious. If the Doc is short with you you need to find another doc real fast. Had a PA yell at me once. "Are you seeing another doctor?" Well I was after that and I did!Agreed...My daughter's neighbor took a puppy to the vet and was prescribed Ivermectin for mites. The vet sent home a prefilled syringe to give to the puppy. The vet tech who prepared the syringe, drew up the wrong amount. Needless to say, the puppy became very sick and the neighbor took the puppy to my daughter and asked her if she knew what might be wrong. She told them to take the puppy back to the vet. The vet soon discovered that the puppy had been given the wrong dose. After a few days of intense care, the puppy pulled through. The neighbor had given the Ivermectin, not even knowing what it was or what the puppy was being treated for. They had told my daughter that they had given the puppy some medicine, but didn't know what it was. I'm a stickler for checking the correct dose of any medication that I give my pets and possible side effects.