sa·quin·a·vir 
(sə-kwĭnə-vîr)
(sə-kwĭnə-vîr)n.
A protease-inhibiting drug given in the form of its mesylate, used usually in combination with other drugs to suppress the replication of HIV.
[saquin- (perhaps alteration of (i)soquin(oline) : ISO- + QUINOLINE) + A(NTI)VIR(AL).]