Cobicistat, sold under the brand name Tybost, is a medication for use in the treatment of human immunodeficiency virus infection (HIV/AIDS). Its major mechanism of action is through the inhibition of human CYP3A proteins...Wikipedia

Manufacturer's Website: Not available                                                                                                                   Average retail cost: $328/30 tabs

Ritonavir (RTV), sold under the brand name Norvir, is an antiretroviral medication used along with other medications to treat HIV/AIDS. This combination treatment is known as highly active antiretroviral therapy (HAART). Often a low dose is used with other protease inhibitors. It may also be used in combination with other medications for hepatitis C...Wikipedia

Manufacturer's Website: Not available                                                                                                                   Average retail cost: $342/30 tabs