Frequency of administration is decided by the treating physician
HUBERMAN: And a good number of people will use it as a longevity agent based largely on animal data that it can suppress tumor growth, it can increase telomere length, and to some extent that it can recalibrate the circadian rhythm changes and the disruptions in the patterns of melatonin that occur as animals and perhaps as humans age
Drug Metab Lett 3:130136 Sun J, Ando Y, Ahlbory-Dieker D, Schnackenberg LK, Yang X, Greenhaw J, Pence L, Qian F, Salminen W, Mendrick W, Beger RD (2013) Systems biology investigation of acetaminophen-induced hepatotoxicity using integrated transcriptomics and metabolomics
However, its important to understand that the exact frequency of injections can vary depending on individual needs and circumstances