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In a two-year randomized trial in older adults, MK-677 raised IGF-1 into a youthful range and increased fat-free mass by about 1.1 kg versus a small loss on placebo (Nass et al., Annals of Internal Medicine, 2008)
Injection Site Reactions One of the most common side effects is mild discomfort at the injection site
Creatine: 5 g While creatine is perhaps the most widely used bodybuilding supplement, Huberman says he takes it primarily for its cognitive effects
GHK-Cu has been studied for several decades, with promising evidence to support skin firmness, elasticity, wrinkles, fine lines, and overall skin health
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