Reproductive-age women constitute an increasing percentage of individu
als infected with human immunodeficiency virus. As clinical management
issues particular to pregnancy become increasingly common, they are a
lso becoming increasingly complex. With the approval of new antiretrov
iral agents, monotherapy with zidovudine, although still standard for
prevention of mother-to-child transmission of human immunodeficiency v
irus, has become inadequate therapy for treatment of the mother. Clini
cians must now consider alternative therapeutic strategies in spite of
a dearth of experience in the setting of pregnancy. To facilitate opt
imal drug treatment of human immunodeficiency virus-infected pregnant
women while maintaining a focus on prevention of transmission, we revi
ewed Medline, Reprotox, personal files, and pharmaceutical industry in
formation about the antiretroviral agents currently approved. After su
mmarizing potential beneficial and detrimental effects in both the pre
gnant and nonpregnant individual, we suggest clinical strategies and d
iscuss the ethical and legal principles that should guide therapeutic
decisions in pregnancy.