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Description
Fatigue is usually the first red flag

Where is the best place to inject B12

Using a validated scoring algorithm, the Actiware software translates the activity data to sleep-wake patterns and activity level

Also, it is worth noting that oral medication can be used to easily manage any initial discomfort

NutritionFacts.org

It does not cause macrocytic anemia until stage 4, this is in very last stage of B12 deficiency
