The key findings of the 36 studies was the mechanism of action is angiogenesis, so blood flow, creating new blood flow to an area, collagen synthesis, anti-inflammatory effects, and neuroprotection
The peptide is also remarkably stable in gastric juiceintact for over 24 hoursdistinguishing it from most growth factors that are rapidly degraded in the GI tract
The preservative lets bacteriostatic water resist contamination during repeated draws, so it suits multi-use research vials better
A tablet cannot replace an injection if your body physically cannot absorb B12 from your gut (e.g., in pernicious anaemia)
For people coming off other GLP-1s (semaglutide or tirzepatide), you have some receptor adaptation already
Some people find that one compound suits their long-term tolerability profile better than the other, and switching can restart progress that has stalled