How 'bout that ritonavir?
D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy*; D017277:Drug Approval; D017320:HIV Protease Inhibitors / Q000009:adverse effects / Q000627:therapeutic use*; D019438:Ritonavir; D013844:Thiazoles / Q000009:adverse effects / Q000627:therapeutic use*; D014633:Valine / Q000009:adverse effects / Q000627:therapeutic use*
D017320:HIV Protease Inhibitors; D013844:Thiazoles; D014633:Valine; D019438:Ritonavir