Investigated for treating COVID-19.
Protease inhibitors cause dyslipidemia which includes elevated triglycerides and cholesterol and redistribution of body fat centrally to produce the so-called 'protease paunch', breast enlargement, facial atrophy, and 'buffalo hump'.
Kaletra is ritonavir and lopinavir.
See also separate entry for ombitasvir/paritaprevir/ritonavir.
Paxlovid is ritonavir and nirmatrelvir.