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Shortness of breath and dizziness: Difficulty breathing and a feeling of lightheadedness
If symptoms return, you can consider a second round with medical guidance
Conclusion Intranasal vitamin B12 administration is an effective and appropriate method for restoring and maintaining adequate vitamin B12 levels in elderly patients with a deficiency
The absence of observed harm in rodent studies does not confirm a favorable therapeutic index in humans
Rx B12 is recommended as an oral supplement to increase B12 levels
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