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[95] Intramuscular or intravenous injection [edit] Injection of hydroxycobalamin is often used if digestive absorption is impaired, [2] but this course of action may not be necessary with high-dose oral supplements (such as 0.51.0 mg or more), [97] [98] because with large quantities of the vitamin taken orally, even the 1% to 5% of free crystalline B 12 that is absorbed along the entire intestine by passive diffusion may be sufficient to provide a necessary amount
By replenishing B12, these injections can help increase alertness, focus, and stamina, promoting a greater sense of well-being
PMC Sikiric P, et al
Frequently Asked Questions About Intramuscular Injections Am I a candidate for intramuscular injections
& Martnez, V
Injections bypass your digestive system entirely, so your body gets what it needs regardless of what's going on in your gut
