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While studies explore plausible mechanisms (NO-system modulation, VEGFR2-Akt-eNOS signaling, GHR/JAK2 in tendon cells), well-controlled human trials are limited
Cheng, Z
Excessive caffeine or energy drinks: Large amounts of caffeine may raise stress hormones and oxidative stress, reducing the effectiveness of supplementation
Blood samples from healthy control subjects were collected between 9:00 to12:30, in fasting condition and let them clot for 1 hour at room temperature, followed by 1 hour at 4 C
Some also report mild localised redness, small lumps, or temporary irritation
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