Animal Flex for sure. It's a targeted joint supplement formulated for bodybuilders/athletes.
What makes Animal Flex different from other joint supplements:
Most joint supplements have the regular glucosamine/chondroitin/msm. These are effective joint supporting nutrients. Animal Flex contains these nutrients in adequate doses however it does not stop there and here is where the differences are:
Animal Flex, like other Animal supplements, is complete and comprehensive. Each pack of Animal Flex consists of several key protective complexes: (1) a potent joint construction complex to help repair connective tissue; (2) a lubrication compound to help cushion the joints from lifting; (3) a support complex to help promote rehabilitation and reduce soreness; and (4) an essential vitamin/mineral blend to underscore optimal joint health.
Animal Flex has some patented ingredients that you won’t find in other joint supplements such as CMO:
WHAT IS CETYLMYRISTOLEATE ?
Cetyl Myristoleate is an all-natural medium chain fatty acid found in only a small number of very select species of animals. Clinical experience suggests that Cetyl Myristoleate acts as an anti-inflammatory, as well as a surfactant and lubricant for damaged joints. Basically, it makes them more "slippery." This substance holds the promise of being the most effective solution to joint problems of any product ever introduced into the market. It is not habit-forming and contains no harsh chemicals or drugs that can cause side effects. It works in a natural manner by acting at the site of inflammation, is highly resistant to oxidation, it has a relatively long life in the body.
Bromelain is another ingredient that you don’t find in other joint supplements. Bromelain is useful in the treatment of a wide range of conditions, but it is particularly effective in relieving inflammation associated with infection and physical injuries.
These are just a couple of ingredients that make Animal Flex stand out.
The full write up:
http://www.animalpak.com/html/sections.cfm?id=60