I wouldn't recommend you take any joint supplement literally all year, including ours. If a joint product has to be taken forever, it's a pretty good indicator that either it or you is not doing its job.
Just because your pain is gone quickly when taking a product doesn't mean the underlying issue has been immediately resolved, that takes time. I think a lot of people take pain relievers, assume the issue is resolved, and the immediately resume hitting that joint just as heavy as they were before they were injured, causing themselves nothing more than further complications later.
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There is a good mix of MOAs in the product, some will provide long term effects, others meant to mediate short term pain.
The write-up will explain more.