can b12 injections cause bloody nose Vitamin Injections: What You Need To Know Feeling tired, foggy, or run-down?

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Science 312 , 734737 (2006)

I am NOT advising you to follow my possibly questionable practice, but, when I knew we were going through Brexit I took note of the expiry dates of ampoules that were being issued at the time and chose to buy enough ampoules to last me for a year beyond their expiry date - working on the principle it might take a couple of years for the supply chain to work itself out and I didn't want to run out

Dementia-like symptoms can also occur, although thankfully these are typically reversible by increasing B12 intake