To provide early access to tipranavir and evaluate the safety and tolerance of tipranavir combined with low dose of ritonavir in patients with progressive, HIV-1 disease who have failed or are intolerant to currently approved treatments for HIV infection, who are unable to participate in another tipranavir controlled clinical trial and have an urgent need for anti-HIV treatment.

Inclusion criteria:

Patients aho have a positive serology HIV antibody test confirmed by Western blot, p24 antigen assay, HIV-1 RNA or HIV culture and are highly pre-treated and virus resistant to multiple protease inhibitors.