Peptides are chains of amino acids which are less than or equal to 50 amino acids in length. They are identical or slightly modified versions of peptides which are found in the human body. As such, they have minimal if any adverse side effects. They function to increased hormone release or activate carious important biochemical pathways and essential cellular functions in your body.
Peptides inevitable decrease with aging. Supplementation is an effort to regain a youthful biochemical physiological and endocrinological state and functionality. This includes repair of injured tissue and improvements in cognitive function, strength, energy, libido, endurance etc.
The efficacy of these agents has been shown in limited animal and human trails as well as case reports for this reason, and the fact that we are all biochemically somewhat unique, your individual response cannot be guaranteed. My suggestion is to try any of these agents for 3 to 4 months. If you’re response is favorable, then continue. If not, there are an abundance of other peptides and therapeutic modalities that you might consider.