Inclusion Criteria

Patients must have:

• Documented HIV infection.
• CD4+ cell count <= 200 cells/mm3.
• Life expectancy > 3 months.
• Written informed consent from parent or guardian for patients < 18 years of age.
• Willingness and ability to follow protocol requirements.

Exclusion Criteria

Co-existing Condition:

Patients with any of the following conditions or symptoms are excluded:

Patient is enrolled or plans to enroll during the course of this study in another clinical study of an antiretroviral or other agent used to treat HIV-1 infection.

• NOTE:
• Patients are allowed to participate in opportunistic infection clinical studies if the investigational agent is not contraindicated for the study.

Concurrent Medication:

Excluded:

• Patient is receiving therapy with an antiretroviral agent other than ZDV, d4T, ddI, ddC, or 3TC.
• Patient is receiving acute therapy for a clinical AIDS progression event such as systemic chemotherapy.
• Dicumarol, Warfarin and other anticoagulant medications.
• Tolbutamide.
• Investigational drugs (unless included in opportunistic infection clinical trial) and all antiretroviral agents (excluding ZDV, ddC, ddI, d4T and 3TC).
• Neurotoxic drugs.
• Cimetidine.
• Erythromycin.

Concurrent Treatment:

Excluded:

Radiation therapy.

Patients with any of the following prior conditions and symptoms are excluded:

History of clinically important disease other than HIV-1 infection or related diseases that, in the opinion of the investigator, may put the patient at risk because of participation in this study.

Prior Medication:

Excluded:

• Patient has received prior therapy with Viramune or any other non-nucleoside reverse transcriptase inhibitor.
• Patient has received any immunosuppressive or cytotoxic drugs or any other experimental agent within 4 weeks prior to study day 1.
• Patient has received treatment with erythromycin, coumadin/warfarin, phenobarbital, amoxicillin/clavulanic acid, or ticarcillin/clavulanic acid within 2 weeks prior to study day 0.

Risk Behavior:

Excluded:

Patients who are active chronic alcohol or substance abusers or have an active psychiatric condition sufficient to impair compliance with protocol requirements.

Required:

Patient must be receiving stable nucleoside therapy with at least one agent for >= 4 weeks prior to study day 0. Zidovudine (ZDV), Zidovudine + Dideoxycytidine (ddC), or Zidovudine + Didanosine (ddI) must be used unless prior intolerance precludes ZDV use. Stable use means no change in dose > 50% for any background nucleoside within four weeks prior to study day 0.

NOTE:

• If patient is ZDV intolerant, ddC, ddI or D4T monotherapy is allowed.