One study examining patients who had undergone bariatric surgery and subsequently used semaglutide found mean vitamin b12 levels decreased from 567 to 494 mcg per deciliter over 12 months
So there was a couple papers talking about increase included found in the brain
Originally researched for its gastrointestinal benefits, BPC-157 has been found to have a wide range of healing effects on various tissues throughout the body, including muscles, tendons, ligaments, and the nervous system
[2] These consist of: Histidine : Needed for growth and tissue repair, and is important for the maintenance of myelin sheaths (fatty tissue) that protect nerve cells
This prescription-strength B12 injection is typically used as a maintenance therapy and is often dosed at 1 mL once a month
Sermorelins reported timeline is similar in shape (sleep first, body composition over months) but the magnitude of effect on visceral fat specifically is significantly smaller