Good afternoon i am a dog owner i have two beautiful Chihuahuas. One is a long haird name Gabby and the other is a short hair named nana. This story is about nana. I bought the hartz product last night thinking i could save on there care well wrong. Nana is at the vet right now with high levels from her blood work. I left my dog with an iv drip on her little leg. I am heart broken and i feel like a bad pet mom!! I used the same product on gabby and she is doing fine they just want us to watch her to make sure she is ok. Nana God really sick vomiting, couldnt stand, couldnt bark was weak. I have never seen her that way since we had her spayed. Even then she didnt vomit. I am so upset with my self and this company. i truely wish we could get it pulled from the shelves of all the stores that carry them. Please be in pray for Nana!!!! I dont want to lose my baby girl. She is my first born dog!!! Please feel free to comment.