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For more on keeping vitamin levels up, even if youre on meds like metformin, check out Mayo Clinics guide to vitamin B12
Leads in Evidence-Based B12 Treatment TrimBody M.D
[4] Regulatory Status: FDA: NOT registered for human use experimental research chemical
If stored at room temperature [up to 30C (86F)], throw away unopened multi-dose vial or single-patient-use KwikPen after 30 days
PMC 370693
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