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do you have to take zinc with ghk cu How Often Inject GHK-Cu GHK-CU Peptide Dosage: Complete Guide
Description
Neither is FDA-approved for human use

Symptoms may include fatigue, weakness, memory problems, difficulty concentrating, mood changes, numbness or tingling in the hands and feet, and difficulty maintaining balance

Bone 66, 7281
10.1111/j.1475-6773.2005.00438.x