Emergen-C packets have been little lifesavers for me as of late. Just when I think I'm cold-free/flu-fee I begin to feel a little something coming on and I immediately- without hesitation- reach for these! They work - so much so I've been buying them by the box. On another note, has anyone tried the "Bobble" - the water bottle with a built in filter? Also, does anyone own any Tracy Anderson DVD's? Would love to know your thoughts! Finally, I'd like to encourage you to make a donation to the American Red Cross in support of the disaster relief efforts to help those in Japan and throughout the Pacific.