These medicines are not recommended with Telzir/ ritonavir: • doses of ketoconazole and itraconazole greater than 200 mg per day (used to treat fungal infections) • doses of rifabutin greater than 150 mg every other day (an antibiotic) • lidocaine given by injection (an anaesthetic) • halofantrine (used to treat malaria) • midazolam and triazolam (used to treat anxiety) • sildenafil and vardenafil (used to treat erectile dysfunction) • lovastatin, simvastatin and doses of atorvastatin greater than 20 mg per day (used to lower cholesterol) • fluticasone propionate and similar medicines used to treat asthma, unless considered essential.