A simple rotation pattern works well: right thigh, left thigh, right deltoid, left deltoid, right hip, left hip, then cycle back
Its ~5day halflife allows convenient onceweekly subcutaneous dosing [1]
This peptide is supplied for research purposes and is intended for qualified professionals conducting scientific and laboratory investigations
So, it's really important to know the signs and symptoms of B12 deficiency
After that window, the preservative action may not be sufficient to prevent contamination, and you should discard any remaining solution
The Retatrutide version of this logic is a direct extension of that same principle