Inclusion Criteria

Patients must have:

• HIV infection, as documented by ELISA/Western blot detection of HIV antibody, positive p24 antigen assay, positive viral culture, or other accepted technique.
• Written informed consent of parent or legal guardian if under age 18.

Exclusion Criteria

Co-existing Condition:

Excluded:

• Debilitating disease, as a result of HIV or associated therapies, that, in the opinion of the investigator, might prevent the patient from completing 6-week dosing period.
• Malabsorption syndrome or other gastrointestinal dysfunction that might interfere with drug absorption.

Concurrent Medication:

Excluded:

• Prescription or over-the-counter medication that cannot be withheld for 48 hours prior to dosing and during the 6 dosing periods. (Note:
• Antiretrovirals must be withheld for 24 hours prior to dosing and during the day of dosing.)
• Other investigational treatments (treatments available through a Treatment IND or other expanded access mechanism is evaluated individually in consultation with the sponsor).
• Alcoholic beverages within 48 hours before dosing and during the day of dosing.
• Coffee, tea, and other xanthine-containing beverages and foods on the day of dosing.

Patients with the following symptoms or conditions are excluded:

History of hepatitis, pancreatitis, or cardiomyopathy within the last 5 years.

Risk Behavior:

Excluded:

Current alcohol or illicit drug use that might interfere with the patient's ability to comply with the dosing schedule and protocol evaluations, as determined by the investigator.