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Single‐ and multiple‐dose pharmacokinetic studies of tramadol immediate‐release tablets in children and adolescents
Author(s) -
Vandenbossche J.,
Richards H.,
Solanki B.,
Van Peer A.
Publication year - 2014
Publication title -
clinical pharmacology in drug development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.711
H-Index - 22
eISSN - 2160-7648
pISSN - 2160-763X
DOI - 10.1002/cpdd.169
Subject(s) - tramadol , medicine , cmax , pharmacokinetics , area under the curve , metabolite , body weight , oral administration , anesthesia , pediatrics , analgesic
In these combined analyzes from 3 open‐label, phase‐1 studies, the pharmacokinetic profile of tramadol and its metabolite (M1) following administration of tramadol immediate‐release (IR) tablets in children and adolescents, 7–16 years old (studies 1 and 2: n = 38; study 3: n = 21) with painful conditions following single oral dose of tramadol IR (25–100 mg) (studies 1 and 2) or multiple oral doses of tramadol IR tablets every 6 hours for 3 days (study 3) were compared with that of healthy adults following similar treatment. Area under the curve of tramadol and its metabolite M1 in children and adolescents was lower compared with adults (Dose‐normalized [DN] AUC, h ng/mL: tramadol: 1316.87 [children]; 1418.02 [adolescents];1838.29 [adults]; M1: 342.56 [children]; 475.4 [adolescents]; 636.13 [adults]) while the C max remained similar (DN C max , ng/mL: tramadol: 203.75 [children]; 165.35 [adolescents]; 226.92 [adults]; M1: 34.93 [children]; 38.42 [adolescents]; 52.14 [adults]). The DN AUC was further lower in children and adolescents with a lower body weight (<50 kg). The weight normalized oral clearance of tramadol was higher in children and adolescents compared with adults (CL/F, mL/min/kg: 12.66 [children]; 11.75 [adolescents]; 9.06 [adults]). No new safety findings emerged. Tramadol was generally safe and well‐tolerated by children and adolescents with painful conditions.