The appeal is so strong that people are injecting the stuff daily or a few times a week
Its free
10.1152/ajplung.00058.2018 51 HoshijimaM.ChienK
Many things such as prescription medications, caffeine, or antacid medication can affect vitamin levels in our bodies
Diabetes Obes Metab 20:9981005 Jones RD, Jones HM, Rowland M, Gibson CR, Yates JW, Chien JY, Ring BJ, Adkison KK, Ku MS, He H, Vuppugalla R, Marathe P, Fischer V, Dutta S, Sinha VK, Bjornsson T, Lave T, Poulin P (2011) PhRMA CPCDC initiative on predictive models of human pharmacokinetics, part 2: comparative assessment of prediction methods of human volume of distribution