Our Recovery Fraction Peptides (RFP's) are uniquely formulated to provide an optimal balance between Proline Rich Peptides (PRP's) and Immunoglobulins (IgG, IgA, and IgM). This allows OS to optimize your Immune System Recovery as well as your muscle recovery and protein synthesis response to weight training. This can help you remain healthier, develop lean muscle, and recover faster from intense workouts.