B Vitamins

I know this isn't WebMD, but I was just wondering if anyone here who knows a bit about B Vitamins, or who takes them, could answer my questions.

I was in CVS getting some Airborne because everyone is getting sick and I think the stuff works to prevent you from getting sick (from my own experience, I usually don't get sick when I take Airborne 2-3 times a day for a few days when people around me are sick, and when I do get sick, I only do for 2-3 days at most, and it's never very severe when I take a lot of Airborne) and was browsing the vitamin aisle.

I know B vitamins are the energy vitamins, and since the cold weather has begun I've felt a bit more fatigued throughout the day. I figured this stuff could help. I was debating between one mix called B-50, and another B-100... I got B-50 because it has 3,000%DV B1, 2,900% B2, 2,500% B6, and 800% B12 among other things, while B-100 had like 5,000% B1, and a lot more of everything else..

Those massive percents seem weird, but I assume it's not harmful, correct? (I mean there were like 5,000 different mixtures of all kinds of "massive" percents of vitamins..lol).

Does this stuff really work? I know when I drink Red Bull as opposed to just coffee, or a caffeine pill, I feel a lot more energized, and I always attribute that to the B vitamins and other stuff in it... Also I hear a lot about B12 shots, and how they completely revitalize your body and mind.... Do they have a lot more B12 in it than this 833%? Well I really notice a difference in my energy level? I sleep well, but like I said I have been feeling fatigued / emotionally down lately.

Thanks!

i know they affect your thyroid, which controls metabolism btw, so in effect you will have a more efficient metabolism while you take them. I would try and stay away from caffeine as your tolerance builds up after regular use, and you gradually shift from feeling energized when you take it to feeling weak and tired all day when you do not take it. Try getting plenty of sleep and eat foods that do not spike your blood sugar ex.. fruits vegetables whole grains etc..halfnaked

Lol too late...I love caffeine...Over the summer when I was just working I'd drink three energy drinks a day...Now I only use them on the weekend (while working) and it's at one or two a day :) I love caffeine.... I have coffee or Pepsi Max if I'm feeling a little down at school, but I don't pay the jacked up prices for energy drinks from the vending machines..LOL