Statin having longest half life:
Rosuvastatin It is a competitive inhibitor of the enzyme HMG-CoA reductase, having a mechanism of action similar to that of other statins. Its approximate elimination half life is 19 h and its time to peak plasma concentration is reached in 3-5 h following oral administration. REF : katzung pharmacology : 14th ed
Rosuvastatin
Pravastatin
Simvastatin
Lovastatin
All India exam