According to the United States Food & Drug Administration (FDA), any polymer composed of 40 or fewer amino acids can be considered to be a peptide
Clinically Evaluated for Dermatologic Safety In an independent clinical evaluation of dermatologic safety-in-use, the Micro-Infusion System was tested across 31 subjects spanning all Fitzpatrick skin types (IVI) from the lightest to the deepest skin tones
HGH levels can fluctuate greatly throughout the day, so rather than specifying an exact normal HGH level for adults, doctors speak in terms of a normal range. Instead of a test that measures the HGH level in your blood at any given time, to test for GHD in adults, we use a test called IGF-1
Agnew, U.M., Slesinger, T.L., Zinc Toxicity, StatPearls
Compare that to the well-documented withdrawal syndromes associated with benzodiazepines and the rebound insomnia that follows discontinuation of most pharmaceutical sleep aids