This is my FAVORITE! I have been drinking this as my everyday vitamin supplement for years. Not only is it a fantastic daily vitamin, it really helps kick any bug you might pick up. I prefer the Tropical flavor.
 
I love that I don't get mid-day slumps and I feel clear headed. I only get sick about once every three years, even if everyone around me is sick. 
 
There are a few of important tips I've learned. 
1.) DON'T TAKE IT ON AN EMPTY STOMACH! Make sure you have food in your stomach! There is a TON of vitamins packed in this thing and they go straight into your blood stream, due to being a liquid. Real food, not just half of an apple. You need something to help absorb it, or you WILL feel nauseous.
 
2. DON'T POUND IT! Spread it out over about an hour and a half to give your body some time to absorb it, a little at a time. I've also learned that you shouldn't spread it out much more than that if you want the benefits of energy and focus. I also suggest only using 16oz to 24oz of water, or else it seems to lessen the impact from an energy perspective. 
 
3. DON'T SHAKE IT! This stuff fizzes. Be sure to drink down an inch or even a bit more before adding it to water bottles... and definitely don't shake it, or you'll likely be wiping it off your walls and ceiling for days.