Joint support evidence brief
May help knee discomfort or osteoarthritis-related joint function, but it is not a muscle, tendon-building, or general recovery supplement.
Healthy-exerciser RCT: UC-II improved knee extension versus placebo, but outcome is joint comfort/function.
Most studied protocols use low-dose native type II collagen; generic collagen peptides do not support UC-II-style claims.
Product identity matters because native/undenatured type II collagen is not interchangeable with ordinary collagen.
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The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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