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Post-Gastrointestinal Surgery: Procedures like gastric bypass can permanently reduce B12 absorption
Onset of facial paralysis was Day 37 after Dose 1 (participant did not receive Dose 2) and Days 3, 9, and 48 after Dose 2

The researchers described these effects as "relatively mild, predictable, and reversible renal injury and altered tubular function." That description is accurate but perhaps understates the significance of what they observed

Medical vials often have self-healing rubber stoppers on top
