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IV and short-duration oral trials METAOD001-004 enrolled smaller groups of healthy or obese men with single doses or 1-week dosing across IV (25-400 mcg/kg) and oral (9-54 mg) routes

During digestion, stomach acid causes it to separate from the protein, and a substance called intrinsic factor enables the bloodstream to absorb it

You need to create the deficit through diet

In those patients neurological symptoms and damage are the key to diagnosis

If you suspect B12 deficiency, blood testing can confirm your serum B12 level and guide an appropriate supplementation strategy in consultation with your healthcare provider.