Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sickly sweet, but works well.

Using this as a post-workout drink, my energy level's much higher than normal. I came in exhausted, spent a bit downing the shake, and within an hour was up and ready to go. Good stuff. I recommend against the "fruit punch" flavor, though... it's nauseatingly sweet (took me nearly half an hour to drink to keep from throwing it up, to be honest). So if you already have problems eating/drinking after exercise (and especially if saccharine flavors make you sick) I'd go for a different flavor. I'm just gonna suffer through it until I get another batch. If I don't update, you can assume the vanilla is much better :-D