B12 injections vs. sublingual
Anyone tried B12 for fatigue? I think the usual recommendation is large B12 injections, 3000-5000 mcg every few days.
Recently I tried a B12 sublingual 1000 mcg. I made the mistake of taking it in the evening and I had severe insomnia. Didn't sleep a wink for the next 24 hours, not even naps. (I felt very tired, too,... it's not like speed or something where it wired me up completely. I just couldn't sleep.)
I tried it again this morning, 500 mcg sublingual. I had a lot of energy and felt slightly wired. For the most part it really improved my fatigue level, though for some strange reason I went through an hour-long period in evening where I could barely stand up I was so tired. Suddenly that passed and I had energy again. Weird.
Several sources say that the body doesn't absorb b12 well from pills, even subligual, compared to the shots. If that's true, then would the shots be like 10 times more effect? That would be dreadful for me.. sure, the increased energy is nice, but the wired feeling is not (it makes my anxiety worse) and I even felt like I was close to hallucinating when I took the 1000 mcg and couldn't sleep.
Or maybe the wired/insomnia is a side-effect of the subligual due to the mechanism, and the shots wouldn't have that???
People with experience, please let me know.