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b12 supplements vs injections Vitamin vs. Oral Supplements: Which Do You Actually Need? What Are the Benefits of
Description
Some compounding pharmacies also offer oral formulations, though absorption rates are lower with oral administration

2009;49(Suppl 1 ): S1629

It requires weight-based dosing and IV or SubQ administration under clinical supervision

However, how quickly you see these results depends on how you take B12
