I thought I'd write a review however I'm not total sure how to rate it more than mid-range. I've been on it for a little over a month and since then I've had an ear infection and a throat infection. I haven't had a cold so I guess that's something that it may have helped with. I haven't had more energy, however I do work extremely long hours doing labour intensive work so I don't think there's much that would help me there, unless it was a vitamin B shot. I'm still alive and haven't had the flu so I'll give it 3 stars.