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The testes, although being the main androgen-producing organ, are not the only ones

Many people notice early improvements in sleep quality, recovery, and energy within 24 weeks, while more visible changes in body composition, muscle tone, and fat loss typically appear around 812 weeks

So injecting beyond a certain point may cause your cells to fight off the excess B12 so hard that it might reduce the amount of active cellular B12 - probably not to dangerous levels, but possibly sufficient to trigger some symptoms

1997;52(3):M129M136

Anticancer Drugs 31 , 2734 (2020)
