Bella is a 12 year old Toy Poodle and she has had the collapsed trachea for three years now. We have tried everything under the sun. Hydrocodone, Cerenia, temaril-p, the honey trick, CBD treats, three different brands of joint chews. I had basically accepted that this was just her life now. My daughter ordered this for me for Christmas honestly as a last resort kind of gift. I didn't expect anything. By mid January the nighttime coughing had dropped by probably 70 percent. She still has rough days but the every single night honking marathon is done. I'm on my fourth bottle now. This is the only thing in three years that moved the needle and I'm including the prescriptions in that statement.