Both BPC-157 and TB-500 have been studied for extended periods individually without serious safety issues emerging
Biological Chemistry, 390 (3), 191214
In diet-induced obese mice, IF induced neuropeptide Y gene expression and increased norephinephrine levels in the hypothalamus leading to fat loss and retention of lean mass, which are beneficial to animals (Gotthardt et al., 2016)
Form Pros Cons Best For Injectable Highest bioavailability, fast effects Requires reconstitution, needles Serious injuries, research Oral Capsules Convenient, gut health support Lower absorption Leaky gut, general wellness Nasal Spray Easy to use, systemic effects Variable dosing Cognitive & systemic benefits (Note: Injectable is most effective for tissue repair, while oral works best for gut healing.) Is BPC-157 Legal in the USA