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However, another study using rats showed that protein levels of NAMPT, COX1, and PGC-1a were unchanged in skeletal muscles after 4 weeks of treadmill exercise, and NAD + levels or other mitochondrial readouts were not included 308

The lack of current FDA approval doesn't mean GHK-Cu lacks promise
What Are the Key Benefits of Vitamin B12 Injections

*Results may vary.
