Pretty sure the only problem with chocolate is the caffeine and sugar, so if it doesn’t have either of those, I can’t really see it being a problem…. thought I can’t imagine chocolate without sugar would taste good at all. Have you ever tried unsweetened chocolate? It’s inedible. Seriously, not good. I’m guessing if the thing doesn’t have sugar, it probably has artificial sweetener in it, and if that’s the case, you probably shouldn’t be eating it, as that causes problems from what I’ve read.