So far I am pleased, though I can only speak to my dog’s energy level, which is very high for his age. He will be 13 in February. I took before pics of his lumps, but so far I haven’t noted any change. However, it’s only been about 5-6 wks, so I will post if his lumps lessen or disappear. If his lumps go away, I’ll be upping my review to 5 stars😊