TRx (Total Prescriptions)
TRx is one of the most widely used metrics for measuring overall drug utilization and market performance. It reflects the full volume of dispensing activity for a product, making it essential for market share calculations, sales forecasting and competitive benchmarking. Tracking TRx alongside NRx and NBRx reveals whether volume is being driven by new patient starts or ongoing adherence among existing patients.
TL;DR
TRx represents the total number of prescriptions dispensed for a drug in a given period, including new scripts, new to brand scripts, and refills.
CATEGORY
Abbreviations
WHO IT IMPACTS
Pharma commercial teams, brand managers, market access teams, and healthcare analysts
RELATED TERMS
DEFINITION
TRx represents the total number of prescriptions dispensed for a given drug within a defined time period, encompassing new prescriptions (NRx), new-to-brand prescriptions (NBRx) and refills.
WHY IT MATTERS
- The standard metric for measuring overall drug utilization and market performance
- Essential for calculating market share, forecasting sales, and benchmarking against competitors
- Combined with NRx and NBRx, reveals whether volume growth comes from new patients or continued adherence among existing ones
- Helps identify inflection points in performance tied to promotional pushes, formulary changes, or competitive shifts
Example: A life sciences company comparing their product’s TRx against a competitor’s over a 12-month period can assess relative market share trends and identify inflection points tied to promotional or formulary events.