My daughter's three year old black cat Sherre was accumulating fluid in her lungs and could not breath. All the vet could do was drain the fluid which he did a couple of times.I found out over the net that people were using Rutin for this condition and it appeared to work. Well I am so happy to report that Sherre is still with us. She is on her second bottle-one a day 50mg. Thanks so much your product definetly works!