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The most common reason someone would need to have their vitamin B12 levels checked is to evaluate for vitamin B12 deficiency, says Mike Ren, MD, assistant professor of family and community medicine at Baylor College of Medicine

Community-reported oral doses (roughly 50150 mg/day) are not derived from any published study

Whether you're at home or at work, we make it easy to experience the revitalizing benefits of B12 IV therapy

TRT stimulates muscle growth by giving your body the testosterone it needs to maintain a healthy balance

Free testosterone, which represents the biologically active fraction, is often a more sensitive indicator of true hormonal status (2)