Mega-T Green Tea Pills?

Ok, so I brought a 30 day supply of the mega-t green tea dietary supplement (with hoodia too). I only plan on taking the 30 day supply just to get back on track with my diet. If I take it for 30 days, I ume that i will lose a significant amount of weight. When I stop taking it at the end of the month, and don't continue, will I start to gain the weight again?