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Energy and mood often improve within a few days
Once stabilized, maintenance doses are typically administered every one to three months
Don't know what your GP was thinking of...might be worth re-visiting...see if you can get the 5mg dose u till your levels are raised sufficiently Presume you mean 400mcg and 800mcg rather than mg, in your reply
In their review, Doets et al
A significant portion of the vitamin is lost before it ever reaches the bloodstream
Some users experience temporary headaches or fatigue
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