This document studied the inhibition of mild steel corrosion in 1M H2SO4 solution using the drug Pantoprazole as the corrosion inhibitor. Weight loss experiments were conducted to determine the inhibition efficiency of Pantoprazole at different concentrations ranging from 1.1x10-4M to 8.8x10-4M. The maximum inhibition efficiency of 95.77% was achieved at a concentration of 8.8x10-4M. The inhibition efficiency decreased with increasing immersion time from 2 to 8 hours. Pantoprazole is proposed to inhibit corrosion through adsorption onto the mild steel surface via electrostatic interactions between the positively charged steel and the protonated inhibitor molecules.