pernicious anemia is treated with injections of vitamin b12 because Anemia: Genomics and Deficiency Oral vs. Intramuscular Vitamin B12
Description
Sublingual delivery absorbs B12 through the mouth tissues, bypassing this limitation

For patients on established B12 injection therapy, monitoring is based primarily on clinical response and haematological parameters rather than routine serum B12 measurements, which may remain very high without indicating harm or overtreatment

Nygrd O, Refsum H, Ueland PM, and Vollset SE (1998)

I'll add photos of the items I'm planning on using below
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This unique compound helps to boost metabolism at the cellular level, giving you more energy to be more efficient and productive
