Nucleoside analogue-induced lactic acidosis is an often fatal condition in
patients with HIV. There is only one report of successful treatment with ri
boflavin. We describe a 30-year-old female with AIDS and nucleoside analogu
e-induced lactic acidosis that exacerbated shortly after introducing total
parenteral nutrition and reversed within hours after the addition of thiami
ne. Successful treatment of nucleoside analogue-induced lactic acidosis wit
h a high dose of thiamine supports the hypothesis that vitamin deficiency i
s an important cofactor in the development of this rare and unpredictable c
ondition in patients with HIV. We suggest that high dose B-vitamins should
be given to any patient presenting with lactic acidosis under nucleoside an
alogue treatment.