The ~1-2 mg/mL serum figures circulating in community sources are DIY formulation conventions, often borrowed from how GHK-Cu cosmetic serums are mixed, rather than results of any AHK-Cu human study
Aside from Vitamin B12, it contains choline, methionine, and inositol
Lipo-B injections are administered intramuscularly, meaning the shot is given directly into a muscle (commonly in the deltoid of the upper arm, the thigh, hip, or buttock)
Make sure you consult the healthcare provider if the cost includes an initial consultation or additional health assessments
Just because patients want something doesn't mean you can offer it
Purchasers are responsible for ensuring compliance with all applicable laws and regulations in their jurisdiction