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Blood testing is the recommended option for concerning symptoms of anaemia or worsening health

What Exactly Is a B12 Injection

As people grow older, B12 doesn't get absorbed as easily

Last reviewed: May 30, 2026 Last updated: May 30, 2026 Written by: Jay Hastings , CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

Guidelines currently recommend a treatment duration of 1014 days for intravenous penicillin G

7 Hydroxocobalamin has a homocysteine-reversing property by converting homocysteine to beneficial methionine that helps with energy production and is essential for the nervous system and normal brain function 7 8 Vitamin B12 deficiency can increase the homocysteine levels resulting in impaired cognitive function, stroke, Alzheimer's disease, cardiovascular disorders, and osteoporosis