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Some people also use amino acid injections and supplements to boost athletic performance or improve their mood
Considering the growing evidence supporting the effectiveness of oral vitamin B12 supplements, they may be a viable alternative to injections for many individuals
1 Asymptomatic autoimmune gastritis likely precedes gastric atrophy by 10 to 20 years, followed by the onset of iron-deficiency anemia that occurs as early as 20 years before vitamin B 12 deficiency pernicious anemia
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