Does a mix of green tea and organic eleuthero help in weight loss at 22?

My sister bought a pack of some green tea, which was given to her by some friend. The quality of the tea according to her was another ingredient added to the green tea, which was organic eleuthero. It promised weight loss and improved immune deficiency. I wanted to know from some beauty and fitness expert whether such green tea, mixed with this herb such as organic eleuthero, could indeed help in treating stress and depression as well. I am highly upset because of my weight, and this herb and tea mix, is the only healthy option I was left with. Hence, please advice appropriately, whether a 22 years old girl could be benefitted from it! Thanks.