I've been giving this to my 69lb Lab for two weeks. My vet prescribed Glucosamine-only tablets, any brand was fine. Though my dog's arthritic limping was to improve in about 30 days of use, according to my vet when using 1500mg/day, after two weeks I am noticing an improvement. This isn't to say that this product is the result of the improvement exclusively, but that it seems to be doing what it is supposed to do. However, the price is (or was) very near what you might pay in a large club-type store, such as BJ's.
The tablets are easily chewable, and considering the breed of dog, presumably taste good to her. The tablets are round, slightly smaller than the diameter of a dime, and about 1/4 inch thick. There is a line embossed through the tablets' diameter to ease in breaking in half. The consistency is similar to Tums antacid tablets. The jar is of course plastic, and the lid secures easily. The lid is not tamper-resistant for those of you who are challenged by common sense, so don't leave it where you do not want it opened accidentally.
I did not give this 5 stars because my review was written after two weeks, and I am unable to give long-term results.
I've been using this for a year now. Well, my Labrador has. Her limp has disappeared when she initially got my vet's dosage, and then I reduced it to one tablet every day. I do notice that her limp returns after about two months of not getting any tablets. But, by starting the regiment all over again, she's back to no limp. So, I bought another bottle. Still very happy with this.