Part Used : ไม่ระบุ
Activity : CYP3A4 INHIBITION
Solvent/Active Compound : decaffeinated green tea
Type of experiment : human
Type of animal : -
Type of study : Open trial
N(Total) : 11
N(Treatment) : 11
Route : Oral administration
Dose/Conc.(herb) : 4 DGT capsules/day (DGT capsule contained 211+/-25 mg of green tea catechins and <1 mg of caffeine)
Duration : 14 days
Type of interaction : Pharmacokinetics
Interaction with drug : Alprazolam
Dose/Conc.(drug) : 2 mg
Remark : There were no significant differences in ALPZ pharmacokinetics at baseline and after DGT treatment (all P values >/=0.05; max. concn. in plasma, 33+/-8 vs. 34+/-13 ng/mL; time to reach max. concn. in plasma, 1.4+/-1.2 vs. 1.4+/-1.2 h; area under the plasma concn. vs. time curve, 480+/-119 vs. 510 +/- 107 h-ng-ml-1; half-life of elimination, 12.3+/-1.7 vs. 13.1+/-3.4 h).
Note : Data incomplete
Subject total: healthy volunteers
- Results indicate that DGT is unlikely to alter the disposition of medications primarity dependent on the CYP2D6 or CYP3A4 pathways of metabolism.
Abbreviation
decaffeinated green tea : DGT
dextromethorphan metabolic ratios: DMRS
alprazola: ALPZ