The only way to bypass this gastric defect is to get the B12 straight into the blood
Chandyo RK, Ulak M, Kvestad I, Shrestha M, Ranjitkar S, Basnet S, Hysing M, Shrestha L, Strand TA
Usually, 1000 mcg (1 mg) is given, but it might be adjusted for each person
Introduction: A Breakthrough in Metabolic Modulation
Where These Numbers Come From It's worth being explicit about provenance, because AHK-Cu attracts confident-sounding dose claims that the evidence doesn't support
In short: While B12 shots are FDA-approved for treating serious conditions such as anemia and malabsorption, they are also used in wellness settings to help people with subclinical deficiencies feel more focused and energized