Table 1.

IC₅₀ (μM) values for P-glycoprotein inhibitors and macrocyclic lactones for the inhibition of Tca-Pgp-11.1 as measured by H3342 efflux assays.

Drugs	IC50	95% CI
Verapamil	3.32 μM	1.16 μM – 10.37 μM
Valspodar	3.01 μM	0.43 μM – 21.75 μM
Tariquidar	68.46 μM	4.13 μM–217.9 μM
Ivermectin	321.5 μM	282.7 μM–805.1 μM
Selamectin	1024.5 μM	551.8 μM – 3173 μM
Moxidectin	Not Determined	Not Determined