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My ankle would swell after simple workouts, feel stiff during hikes, and the pain often lingered for days
Because these side-effects are often mild and temporary, they are sometimes dismissed
The presence of copper may be central to these observations, including collagen synthesis, modulation of inflammatory signaling, and antioxidant potential
The appropriate framing is that retinoids have stronger evidence, not that GHK-Cu has weak evidence overall
Glutathione faces similar issues
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