Like every other treatment, there are side effects, however this one seems to work well for my dog and my situation. Being blind and not having to give my dog more than one pill is nice, and I have no known side effects, vet mine turned and tested. So yes it's new on the market, however it's a lot better than other products such as the skin thing that can burn your dog.

Simparica Trio is amazing. It is hands down the best Heartworm prevention all in one pill to deal with everything. Zero Fleas, tick’s or worms after my Large Goldendoodle taking this. She’s been on it since 11 weeks old. It’s a game changer.

Our vet prescribed Simparica Trio for our young Golden Retriever, & I trusted him. After the very first dose, our dog developed over 10 continuous days of diarrhea. Please read the massive list of side effects included with this "so called" wonder medicine before giving it to your dog! And diarrhea is not an uncommon side effect