This is a liquid Vitamin C formula that fights against all things nasty like the common cold and the flu. It is a small liquid shot that has this sweet berry taste (surprisingly, not orange) that gives a nice little boost to the immune system. I take a shot of it every morning, and I actually look forward to it. It's pricey, but to me it is worth it. I have been cold and flu free ever since I started taking it four months ago.