It may not directly stimulate immune support, but regulates it through various actions
The FDA has been cracking down on peptide compounding, but political pressure may shift enforcement in coming years

Energy+ Boosts Energy Levels Improves Hydration Fights Fatigue & Brain Fog Great for Active Lifestyles Key Ingredients: Vitamin B12, Amino Acids Immunity Strengthens Immune System Boosts Vitamin Levels Great for Traveling Cold & Flu Season Defense Key Ingredients: Vitamin C, Vitamin B12, Magnesium Brain Improves Brain Health Boosts Vitamin Levels Sharpens Mental Performance Great for Memory Care Key Ingredients: Phosphatidyl Choline Glow Up Boosts Collagen Production Revitalizes & Rejuvenates Skin Improves Deep Hydration Supports Hair, Skin & Nails Key Ingredients: Vitamin C, Vitamin B, Amino Acids, Magnesium Weight Loss Helps Burn Fat Boosts Energy Levels Supports Metabolic Function Improves Hydration Key Ingredients: Vitamin B12, L-Carnitine, Vitamin B Detox Helps Cleanse Your Organs Detoxifies the Liver & Kidneys Hydrates & Revitalizes Pairs Well with Glutathione Key Ingredients: EDTAs, Glutathione (add-on) Relive Health Brentwood also offers IV vitamin therapy that includes NAD+ and Methylene Blue

BPC-157s hepatoprotective properties contribute to its ability to counteract NSAID-induced liver toxicity
The peptide glycyl- -histidyl--lysine is an endogenous antioxidant in living organisms, possibly by diminishing hydroxyl and peroxyl radicals