We use this product on our elderly Staffie - she was diagnosed with mast cell tumours over 2 years ago, with a prognosis of around 6 months to live - she's still with us and now about to turn 13 (Valentine's Day) and the vet said to us recently "whatever you're doing, keep doing it! it's working" - the only thing we introduced after diagnosis was the addition of CBD after reading about other people who said it worked for them.