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Nasal spray protocols Nasal administration offers rapid absorption through the highly vascular nasal mucosa, providing faster onset than oral dosing with greater convenience than injection
That is a conversation to have with your GP or a specialist haematologist, not a reason to add a private injection on top of an NHS schedule without telling either provider
From my experience as a medical professional, B12 injections do play a role in improving energy levels, especially for those who are B12 deficient
Source: Becejac et al., 2018 Dosage Adjustment No evidence supports changing your dose based on alcohol consumption
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