Linopirdine (DuP 996) inhibits IC (measured as a medium afterhyperpolarization tail current, ImAHP) with an IC50 of 16.3 μM. Linopirdine (100 μM) weakly inhibits the K leak current, IL, the transient outward current, IA, the delayed rectifier, IK, and the slow component of IAHP, by 28, 37, 36 and 52 percent, respectively. The mixed Na/K inward rectifying current, IQ, is essentially unaffected by Linopirdine (IC50>300 μM).
Linopirdine acts as an agonist of TRPV1 (transient receptor potential vanilloid type 1).