Told my heart doctor I was taking tirzepatide and the weekly amount. Didn't seem to care, doubt he checked for prescription from my main doc even though I have one. Different health systems probably. Wouldn't even know if he could check. Wouldn't ever admit to non-approved drugs though.
MOTS-C can leave a really angry red spot. Using more diluent helps - I was way too concentrated at first. Cold pack and pressure right after the shot made a big difference for me.