I wouldn't if I were you. I couldn't find anything right now that suggested it was dangerous, but that doesn't mean it isn't. There are healthy ways to lose weight without taking any pills or powders. So many of them wind up causing heart or liver issues. Not worth the risk to me.
I count calories and that's working for me with consistent and healthy results. I can help you get started losing weight this way, if you are interested. Just let me know. No gimmicks or pills, just eating fewer calories than you burn.