Peptides vs Steroids: What's Safer and More Effective? BPC 157: Not a steroid, not a mystery drug, a healing peptide. You've probably heard the hype, so here's the real science: 1 Speeds up tissue repair Helps muscles, tendons, and joints Click the link in my bio to read the full article! Dr. Kyle Gillette clarifies that peptides are a string of amino acids used as medications rather than supplements, with bioavailability Peptides Lack Reliable Safety Information, Watchdog Warns