The ingredients are synephrine, green tea extract, and caffeine.
Synephrine is another name for bitter orange, or citrus aurantium. This was on Consumer Reports "Dirty Dozen" list of most dangerous supplements. The rest of the pill is caffeine stimulants. It sounds like it could be potentially dangerous

Yet any increase in calories burned would be minor. You might reach your goal a week or two early, but you could walk away with a lifetime of serious health problems as a result. I'd skip this one if it were me.
Btw, the reviews of the products praising it are from sites that gain financially from the sale so they will say it's a top product.
Good luck