RT Journal Article
SR Electronic
T1 Interaction between chloramphenicol and acetaminophen.
JF Archives of Disease in Childhood
JO Arch Dis Child
FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health
SP 1121
OP 1124
DO 10.1136/adc.61.11.1121
VO 61
IS 11
A1 Spika, J S
A1 Davis, D J
A1 Martin, S R
A1 Beharry, K
A1 Rex, J
A1 Aranda, J V
YR 1986
UL http://adc.bmj.com/content/61/11/1121.abstract
AB Acetaminophen has been reported either to prolong or not to affect the clearance of chloramphenicol. To confirm one of these findings we studied the clearance of chloramphenicol and its metabolites using high pressure liquid chromatography in five patients (ages 2.5 to 5 years) before and during oral treatment with acetaminophen (50 mg/kg/day). Significant differences were observed in mean (SD) peak serum chloramphenicol concentration (-9.7 (3.2) mg/l), mean (SD) apparent volume of distribution (+225 (162) ml/kg), mean (SD) chloramphenicol half life (-1.9 (1.1) hours), mean (SD) chloramphenicol clearance (+236 (94) ml/kg/h), mean (SD) area under the curve (-83.5 (33.0) mg/l/h), and mean (SD) elimination constant (+0.34 (0.13) h-1) between samples obtained before and during treatment with acetaminophen. Acetaminophen, when given orally for several days, increased the clearance of chloramphenicol, perhaps by increased glucuronidation. This report re-emphasises the need for therapeutic drug monitoring whenever these two drugs are used together.