check vitamin b12 after injection Shots at Home: How, Where & How Often to Inject Yourself Are Vitamin B12 Shots Right
Description
In older age, vitamin B12 absorption tends to be less efficient due to a range of health issues, including gastritis stomach lining inflammation and thinning but also because of decreased production of stomach secretions (EFSA, 2015

Proper dosing is essential for managing this condition

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Most vitamin B12 injection are injected into the fatty tissue just beneath the skin