I used this product in February of 2020 on our dog Heidi who is 16 years old. She had seizures and we did not know what was going on. She had 11 seizures in 30 days. We took her to the vet and tests were required. The first medicine given did not work at all. She was given three different types of heart meds, 1. to get rid of any liquid around the heart, 2. To held her heart function and 3. a diuretic for her fluid buildup. She is doing better of her meds, but has lost a lot of weight and is very thin. Do not use any Hartz products on any of your animals.