Heat of hydration or enthalpy of hydration of ions corresponds to the heat that is released by hydration of one mole of ions at a constant pressure. The more the ion is hydrated, the more heat is released. Degree of hydration depends on the size and charge of ion. The smaller the ion and the greater its charge, it will be the more hydrated.

Green Tea ALONE can't detox you from marijuana, obviously. But it helps in the hydration side.
What you need is a whole crapload of exercise, and constant water hydration.

heat of hydration

removal of contents through slow acting laxatives, constant hydration and antibacterial or antiprotozoan medication