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Some protocols extend to 8-12 weeks with longer off periods
Mass spectrometry, HPLC analysis, and certain enzyme assays can show unexpected peaks or signal interference from benzyl alcohol
This compound is not approved as a drug, diagnostic, or dietary ingredient, and is not manufactured, packaged, or marketed for consumption, self experimentation, clinical application, or any use outside properly designed and ethically approved research protocols.
Dietary insufficiency is another significant cause, particularly among strict vegans and vegetarians, as vitamin B12 is naturally found almost exclusively in animal products including meat, fish, eggs, and dairy
It took a while to work out what frequency works for me, and over the last couple of years I have found once a month works well for me
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