Yes, certain small peptides can cross the blood-brain barrier, the protective filter that controls what enters brain tissue, which lets them act directly on the nervous system
The rationale for combining them is complementary mechanisms : BPC-157 for trophic and anti-inflammatory effects, TB-500 for cell migration and angiogenesis [8]
"Pentadecapeptide BPC 157 (PL-10) promotes tendons-to-bone healing in a rat model of rotator cuff repair." J Orthop Surg Res
My final thoughts on these peptides My Experience with BPC-157 and TB-500: What They Work For and What They Dont This video is a follow-up to my recent discussion on the peptides BPC-157 and TB-500, where I covered what they are, how they work, and what they may be beneficial for
If you are considering using AOD 9604, retatrutide, or any combination of unlicensed peptides for weight management or body composition purposes, it is strongly advisable to speak with a qualified healthcare professional before doing so