Is SlimQuick Rapid Fat Loss Dietary Supplement good to lose weight? Is it dangerous? Any secondary effects?

I have been trying to lose weight for 4 years now and I can't. I have problems with my thyroid gland, which is partly in charge with metabolism. I have tried diets and exercise and I think it is time to start using pills. I was thinking of SlimQuickFat Burner Rapid Fat Loss Dietary Supplement. Help me please. I really want to look good for my prom.