WHO Model Prescribing Information is being prepared to provide up-to-date and independent clinical information on essential drugs, including details of dosage, uses. contraindications and adverse effects. It is intended as source material for adaptation by national authorities, in particular in developing countries, that wish to produce drug formularies, data sheets and teaching materials.

This update of the volume on HIV-related illnesses covers drugs currently used for the prophylaxis, treatment and palliative care of patients with opportunistic infections and other illnesses related to HIV infection. For further information on the drugs used in the treatment of early HIV infection see The implications of antiretroviral treatments WHO/ASD 97.2 and Guidance Modules on Antiretroviral Treatments WHO/ASD 98.1 UNAIDS 98.7.