QuanTB is an electronic quantification and early warning system designed to improve procurement processes, ordering, and supply planning for TB treatment. Created by the USAID-funded Systems for Improved Access to Pharmaceutical and Services (SIAPS) Program, QuanTB is a downloadable desktop tool that transforms complicated calculations into user-friendly graphs displaying key information for managing medicines. When used on a regular basis (e.g., monthly, quarterly), QuanTB serves as an early warning system, providing information on actual versus planned consumption, potential expiries, and stock outs of medicines.