Inclusion Criteria:

• Clade B HIV-1 infected subjects meeting following criteria at screening:

  • Plasma HIV RNA ≥ 5,000 copies/mL
  • CD4+ lymphocyte ≥ 200 cells/µL
  • Antiretroviral naive or experienced
  • Off all ARV therapy with HIV activity for > 8 weeks
• BMI of 18 to 35 kg/m2, inclusive.
• Not currently co-infected with HCV or HBV
• Men and women, ≥ 18 years of age

Exclusion Criteria:

• Woman of childbearing potential (WOCBP) unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period up to 12 weeks after the last dose of study drug.
• WOCBP using prohibited contraceptive method including oral, injectable, or implantable hormonal contraceptive agent within 12 weeks of enrollment.
• Women who are pregnant or breastfeeding.
• Women with positive pregnancy test on enrollment or prior to study drug intake.
• Sexually active fertile men not using effective birth control during study and for at least 12 weeks after last dose of study drug if partners are WOCBP.
• Significant acute or chronic medical illness not stable or not controlled with medication or not consistent with HIV infection.
• Current or recent (within 3 months) gastrointestinal disease that, in the opinion of Investigator or Medical Monitor, may impact on drug absorption and/or put subject at risk for GI tract irritation and/or bleeding.
• Acute diarrhea lasting ≥ 1 day, within 3 weeks prior to randomization.
• Major surgery within 4 weeks of study drug intake.
• Gastrointestinal surgery that could impact upon absorption of study drug.
• Donation of blood or plasma to blood bank or in a clinical study (except a Screening visit or follow up visit of less than 50 mL) within 4 weeks of study drug intake.
• Blood transfusion within 4 weeks of study drug intake.
• Inability to tolerate oral medication.
• Inability to be venipunctured and/or tolerate venous access.
• Personal history of clinically relevant cardiac disease, symptomatic or asymptomatic arrhythmias, syncopal episodes, or additional risk factors for torsades de pointes.
• Personal or family history of long QT syndrome.
• Recent (within 6 months) drug/alcohol abuse
• Any other medical, psychiatric and/or social reason which, in the opinion of the Investigator, would make the candidate inappropriate for participation.
• Evidence of organ dysfunction or clinically significant deviation from normal in physical examination, vital signs, ECG or clinical lab determinations or not consistent with subject's degree of HIV infection.
• Evidence of 2nd or 3rd degree heart block at screening or Day -1
• Positive urine drug screen at Screening or Day -1 without valid prescription (subjects positive for cannabinoids and/or amphetamines will be included).
• Positive blood screen for hepatitis B surface antigen.
• Positive blood screen for hepatitis C antibody and hepatitis C RNA.
• History of significant drug allergy
• Exposure to any investigational drug or placebo within 4 weeks of study drug intake.
• Prescription drugs within 4 weeks prior to study drug intake, unless approved by BMS medical monitor.
• Other drugs, including over-the-counter medications, vitamins and/or herbal preparations, within 1 week prior to study drug intake, unless approved by BMS medical monitor.
• Use of oral, injectable or implantable hormonal contraceptive agent within 12 weeks of study drug intake.
• Use of prescription drugs or OTC drugs that may cause GI tract irritation or bleeding within 2 weeks of study drug intake, unless approved by BMS medical monitor.
• Use of alcohol-containing beverages within 3 days prior to study drug intake.
• Use of grapefruit,grapefruit-containing or Seville orange-containing products within 7 days prior to study drug intake.
• Prisoners or subjects involuntarily incarcerated.
• Subjects compulsorily detained for treatment of either a psychiatric or physical illness.