Hi Cherryem. Glad you posted this question. I have a 15 year old dog who is on Vivitonin because she had mild stroke symptoms. It definitley works like magic. I stopped giving it to her for a few weeks because she improved so much. Unfortunately last weekend she had three very severe seizures within 24 hours. I put her back on vivitonin and within days she was so much better (she had been having spasms for about 3 or 4 days) and these have stopped almost completely. I agree with you that just because a dog is old and with every ailment you begin thinking this is the end, it isn't necessarily. My dog is so interested in everything and eating and drinking, grooming, playing, running around etc. I may have her for another year at least, although my vet has said I may be in for a roller coaster ride with her!