To compare the efficacy and durability of antiviral response of GW433908 and nelfinavir when each drug is administered in combination with abacavir and lamivudine in antiretroviral-naive patients over 24 and 48 weeks. A follow-up visit is performed 4 weeks after the permanent discontinuation of study drug.
Patients have examinations and laboratory tests performed at visits.
A follow-up visit is performed 4 weeks after the permanent discontinuation of study drug. Patients have examinations and laboratory tests performed at visits. To get to this stage, the drug has already shown that it is safe and effective. The purpose of a phase three trial is to see what dosage is the most effective. Phase three trials often have a large number of participants.