I was diagnosed with anemia a few months ago and got pills for it. But recently I've felt really dizzy,weak and other anemia problem so I think it's back again. My family doctor is still on vacation so I was thinking to get some OTC vitamins for it. Does vitamin B12 work for that? At least temporary? If yes, what is the recommended dosage? 1000mcg, 2000mcg? Does anybody has this problem with their crohns? If so does it mean I'm flaring and somewhere in my intestine is bleeding?