This stuff works better than any vitamin supplement I have ever taken! My entire family takes these daily and is hooked on them; we always need to have a box in our house. I think the pink lemonade flavor is the easiest to drink and take daily without wanting to spit it out. It doesn't really taste like pink lemonade, but more like carbonated water, which is why it's easy to drink. I usually can't stand these kind of things due to flavor, but I actually like this one. I've taken this on multiple occasions where I felt a cold starting to creep up on me, and this does one of two things depending on how soon I catch the cold: 1) soon enough: I don't get sick. It keeps the cold at bay and gives me enough energy to keep going through the day, and I never get so sick where I have to call out of work or lay in bed all day. It really does fight the germs in your system and kick them out. 2) not soon enough: I get a sped-up version of a cold. Usually my colds can take weeks to go away on their own, but if I continually take one of these, my cold will last maybe three days. No fevers, no lack of energy or fatigue, just a slight cough and possible runny nose. Pretty amazing how effective this is. My little brother claims that when he takes this he feels rejuvenated with energy. I don't really ever feel the energy boost, but apparently it's there. Also love that this one supports breast cancer awareness! Really appreciate that.