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People who have intrinsic factor get it from eating animal products but people with Pernicious Anaemia cannot absorb it from diet
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While systemic injection also delivers peptides to the brain via blood circulation, nasal delivery may provide more direct CNS access for some portion of the dose
While self-administration is feasible with proper training, consulting with healthcare professionals for initial guidance is advisable
Because IV delivery achieves near-complete bioavailability by bypassing the digestive system entirely, the nutrient impact per session tends to be more comprehensive, which can extend the interval between treatments compared to single-nutrient injections
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