Can anyone tell me what the deal is with B12? I ordered the suggested pack of vitamins from my doctor and there is a sublingual B12 pill and a multivitamin that has 1668% of suggested B12...Also, is this a vitamin that sticks in your system or makes its way out?

I don't know very much about it, but I know that it helps support a good metabolism. About a hundred years ago, when I was on a Lindora program (ketosis diet), they gave me daily shots of B12 to help my metabolism. I lost 40 pounds in 2 months. Obviously, I didn't keep it off. Anyway, I digress. . .

A quick google search will give you a better idea.

b12 also aids in energy

I was on a ketosis diet too about 30 years ago. 600 calories a day, if you can believe that. Every morning I went and had my ketones checked at the doctor and had a small B-12 shot. I gotta say, even taking in only 600 calories, I felt FANTASTIC for the 5 months I was on it, never shakey, never weak. Never got sick and felt like a million bucks. Elixer of the Gods! But if you don't NEED B-12, it'll be the same as shooting water into your body. You'll only react if you have a deficiency that it replaces.

Here's a wiki for it.

Vitamin B12 - Wikipedia, the free encyclopedia

They often over prescribe b-12 to make sure you have proper liver funciton and unlike Vit A or E you wont become toxic if you have to much. B-12 if your body is at peak with it is Water... you body wont absorb what you don't need.

I am on tripled the dose of a normal person cause of some medications I had when I was younger, even though its been 9-10 years I can STILL have after affects to my liver. I will be on B-12 for the rest of my life cause of the long term affects of that medication.