I do not know about evervess before. But since i went to Penang last time, i saw these drink and i started to try it. Firstly, i thought i was OK. Second time i tried it when i was on the bus from penang to Shah alam. I was very tired and so sleepy that time. Lastly i decided to drink it. So i drank it about 30 minutes, i did realise i'm not sleepy anymore and i said to myself..."wow..it was a good drink to avoid u feel sleepy and it seems recover my energy"....hahaha...after that, i started to drink evervess and if you really tired i would like to recommend you because it will recoved you energy. For me this is an alternative drink instead of 100 plus.