There are many herbs out there and more than just green tea that can help you lose weight. First, consider what would help you lose weight. Metabolism and energy boosters can help you have the drive and fat burning process needed to shred pounds with a healthy lifestyle. Using a tea to replace unhealthy drinks such as soda or energy drinks can reduce the amount of calories and trans fat you take in, which will lead to fewer pounds added on. Use herbs on seasoning when cooking to turn a bland, healthy meal into something appetizing instead of resorting to the unhealthy choices that so many people turn to these days.
In essence, the answer is yes, there are herbs that will help you lose weight. There is no miracle herb that will shred the pounds without help from you. Healthy decisions in what you put into your body is just as important if not more than making sure you stay active. Personally I like a peach, mango, green tea mix with a metabolism booster in it. It is healthy, flavorful, gives me energy, and doesn't have the downside of the "miracle drugs" that most pharmaceutical enthusiast try to push on people. I also use herbs good for the body (ones that help the heart and circulation as well as ones that help with digestion and mineral absorption) in my food which adds a tasty way to take a simple dish of a grilled chicken breast and side of veggies and adds that extra "umph" to the flavor to make it more desirable than that Big Mac or that Whopper down the street.