If i do the p90x n take meltdown pills how fast will i loose weight?

You are going to kill yourself literally. Why don't you just do the p90X and eat healthy trust me it will do wonders. You really shouldn't be taking those pills at your age it's only going to hurt you. And as far as your weight goes you are not 25Ibs overweight. The average for me and I'm 5'2 is between 110-135 for healthy weight so I know that's not a correct number for someone taller then me.