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Q3: Why hasn ' t GHK-Cu obtained FDA drug approval like some active ingredients

This triggers the release of glucagon and glutamate

Both have value

In addition, in response to a single bout of resistance exercise, plasma NO metabolites, nitrate and nitrite, and cyclic guanosine monophosphate (cGMP) were elevated 30 min following exercise [7]

New Engl J Med (2009) 360(26):273041

Fata F, Gencheva R, Cheng Q, Lullo R, Ardini M, Silvestri I, et al