I've used this before with excellent results. Mangosteen fruit and concentrate has a wonderful flavor. I use this in my smoothies with black cherry concentrate. You can dilute it 50% and it still tastes great. Does it work on joint health I can't be sure, but I can say I love this juice
I used to take Mangosteen years ago and it helped me so very much back then. I am happy to say that - 14 yrs later, my body is still a fan. Again, thanks to Dynamic Health for making a superior product - and to iHerb for distributing it!