“Our lab mix has been on Proin since she was a puppy (now over 16 years old). Have never noticed any negative side effects, and she has not had urinary incontenense since being on. Clearly still working as when I have forgotten a couple of days it comes back. They say they are chewable, she won’t. I give it and all her meds in small spoonfuls with canned pumpkin, which she loves.”