Peptides & Cellular Repair: What Research Shows , Peptides are short chains of amino acids that act as biological messengers, helping cells communicate during stress, inflammation, and repair. We utilize many peptides clinically for telehealth patients but two of my favorite actually have some new trials in the scientific literature that I'm excited about: BPC 157 and TB 500 are speeding up how The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University BPC 157 TB 500 Erectile Dysfunction Effects: What the Limited Evidence Shows