These websites typically carry disclaimers clarifying that the intended use of these compounds is for research purposes, allowing their sale to wiggle through a legal loophole
There are several varieties of lipotropic injections which contain different ingredients, but they typically have high levels of Vitamin-B12 and Vitamin-B6 as well as a combination of amino acids like methionine, inositol, and choline
without causing bodily injury or any damage with the body as found in some plant extracts 6
For more on this, see our guide to A Medical Guide to NAD+ Precursors: Understanding NR, NMN, and Your Cellular Health, and how it is evaluated and treated at Perfect B in Doral
This normalizes the concentration to the same value as a standard 10mg/1mL reconstitution, making dosing arithmetic consistent if you switch between vial sizes