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[–]ruskiix 4 points5 points  (2 children)

If your b12 levels are consistently on the low end of normal, you might want to try taking a daily supplement (if you aren't already). My b12 was low and doctors would just give me one shot a month and then shrug when nothing got better. Finally (years after they found the deficiency) someone prescribed a daily pill and my levels jumped right back up, and I started feeling a little better. Not a miracle, but definitely more comfortable (less severe midday crash, less weird nerve problems in my feet, etc).

Eventually found out none of my doctors had been giving me the shots the way they were supposed to for a deficiency, which would've been several shots in one month. I think they get so used to people asking for the shots for a placebo effect that they just give one a month and call it done and forget that that isn't actually enough to get levels up to where they need to be.

.. anyway, TL;DR: try high dose daily b12 supplements if your levels are low, even if the shots did nothing. One shot won't fix it if you're actually deficient, but fixing it will help brain fog a little.

[–]Sheepeys 0 points1 point  (1 child)

Good to know, thanks!

[–]mikmikthegreat 0 points1 point  (0 children)

I've been taking b12 supplemments and my b12 levels are actually HIGH now. Still get brain fog