Several compounds have been investigated as EPIs. Some examples include:
- Verapamil: A calcium channel blocker that also inhibits P-gp. - Quinidine: An antiarrhythmic agent that inhibits P-gp. - Tariquidar: A third-generation P-gp inhibitor with high specificity. - Elacridar: An inhibitor of both P-gp and BCRP. - MK-571: An inhibitor of MRP1.
