Two nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs)  plus either
One non-nucleoside RTI (NNRTI) OR One protease inhibitor
 Nucleoside analog reverse transcriptase inhibitors  (NARTIs, NRTIs)
S/E=Lactic acidosis
1.)  Zidovudine (AZT, trade name Retrovir)
First HIV antiretroviral drug approved by the FDA
2.)  Didanosine (ddI, trade name Videx)
Second FDA-approved antiretroviral drug
Analog of adenosine
PANCREATITIS
3.)  Stavudin (d4T, trade names Zerit)
4.)  Lamivudine (3TC, trade name Epivir)
Treatment of both HIV and  hepatitis  B
5.)  Abacavir (ABC, trade name Ziagen)
Analog of guanosine
6.)  Emtricitabine(FTC, trade name Emtriva [formerly Coviracil] )
Structurally similar to lamivudine
Approved for the treatment of HIV, undergoing clinical trials for  hepatitis  B 
 Non-nucleoside reverse transcriptase inhibitors  NNRTIs
S/E=Stevens-Johnson syndrome
1.)  Efavirenz (trade names Sustiva and Stocrin)
2.)  Nevirapine (trade name Viramune)
S/E=liver failure
3.)  Delavirdine(trade name Rescriptor)
4.)  Etravirine (trade name Intelence)
Protease inhibitors 
1.)  Indinavir
S/E=Crystal induced nephropathy
2.)  Abacavir
S/E=Hypersensitivity syndrome