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Pharmacokinetics of zidovudine and dideoxyinosine alone and in combination in children with HIV infection.
Author(s) -
Gibb D,
Barry M,
Ormesher S,
Nokes L,
Seefried M,
Giaquinto C,
Back D
Publication year - 1995
Publication title -
british journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.216
H-Index - 146
eISSN - 1365-2125
pISSN - 0306-5251
DOI - 10.1111/j.1365-2125.1995.tb04490.x
Subject(s) - pharmacokinetics , zidovudine , cmax , pharmacology , medicine , oral administration , drug interaction , didanosine , area under the curve , human immunodeficiency virus (hiv) , viral disease , virology
The pharmacokinetics of zidovudine (ZDV) and dideoxyinosine (ddI) were investigated following administration alone and in combination to children with symptomatic HIV disease. The children were studied on three separate occasions and received ZDV 200 mg m‐2, ddI 100 mg m2 or a combination of ZDV 200 mg m‐2 plus ddI 100 mg m‐2. The administration of ddI did not significantly alter ZDV pharmacokinetics. The area under the curve (AUC) was 14.2 +/‐ 4.9 and 15.8 +/‐ 7.2 mumol l‐1 h and elimination half‐life (t1/2, z) was 1.4 +/‐ 0.4 and 1.2 +/‐ 0.2 h in the absence and presence of ddI respectively. The peak concentration (Cmax), time to peak (tmax) and apparent oral clearance (CL/F) were also unchanged. The administration of ZDV had no significant effect on ddI Cmax, tmax, t1/2,z, or CL/F, however the AUC was reduced by 19% (5.9 +/‐ 2.9 to 4.8 +/‐ 2.7 mumol l‐1 h; P < 0.05). This study suggests that ZDV and ddI may be co‐administered to children with symptomatic HIV disease without concern of a clinically relevant pharmacokinetic drug interaction.