An inspection is implemented to study MHD slip flow of viscous reactive fluid in a convectively heated porous vertical channel. The ordinary differential equation governing the flow field is solved by a semi-analytical method (perturbation series method) where suction/injection is used as a fluid controller in the channel. The results are presented graphically and discussed quantitatively with respect to various parameter embedded in the problem. It is observed that for both suction/injection, increase in Magnetic field parameter, decrease the velocity flow and skin friction.