I use peptides in my personal life and with my patients., But, there are only a handful I really use and I use them when other therapies may not be as effective., Why peptides?, Peptides are targeted Powerful results, no needles needed! Nasal sprays are an innovative way to deliver peptides quickly and conveniently without injections. By administering peptides through the nasal pathway, they can be absorbed rapidly, offering Frontiers Senolytic Peptide FOXO4 DRI Selectively Removes Senescent Cells From in vitro Expanded Human Chondrocytes Frontiers Senolytic Peptide FOXO4 DRI Selectively Removes Senescent Cells From in vitro Expanded Human Chondrocytes