Hm. probably true. But I was having problem with my right knee. If I'm running for more than 30-40 mins, it'll start to pain. Then I tried the combination. Even after finishing 2 big bottles, no different for me. In the end, I just stopped running altoghether and do HIIT instead (or cycling / ellipticals).
But again, it may be the brand / type. I was taking the tablet form Ocean Join-RX. I heard the powdered form may be better.
Pain can come from many sources eg chronic injuries like tendinitis, sprains, pulled muscles & ligaments, muscle imbalances & postural issues etc etc...
Joint supplements will only work hand-in-hand with a good rehab program..
2 yrs back, I had bad shoulder impingement & rotator cuff issues + medial knee pain which prevented me fr weight training. Went for X-rays & MRIs which turned out negative. Spent a few thousand bucks seeing specialists who knew only how to dispense drugs...
Finally, someone fr this forum gave me the contact of Aldrin Ho, a very experienced rehab therapist cum strength coach. To make a long story short, after being treated & rehabbed by him, I was back in the gym working out after a month & after 3 months my weight training intensity was back to pre-injury levels.
If you're interested, here's his website & contact details:
http://www.ziklagfitness.com/contact-us/