It has caffeine, so most of the effects will be because of that alone. You’ve probably had a bit of caffeine in your life, do you enjoy that “stimulated” feeling? If so, it’s not a horrible way to speed up your metabolism, and it will do that, but there are cheaper sources of caffeine if the costs are an issue.
I understand the rest below isn’t in answer to your question, but might be helpful
One question I always try to keep in mind when I’m considering a supplement is how long do I want to use it? If you’re not looking to lose weight, but want to use this to maintain your current weight, when will you stop taking it? Is this something you want to take forever? 10 years? Just give it a try?
For me that always puts possible benefits in perspective. If it’s not something I would want in my life long term, why is it a good idea short term? If I don’t have a good answer to that question then there’s probably a solution that fits me better (and usually isn’t a pill).