Urine Plasma  
Polyphenol metabolite Composition of the [polyphenol] source Doses
administered
Dose
duration
Total no. subjects Mean urinary excretion (%) Kinetic data Tmax (hours) Mean Cmax (µmol/L) Half life (hours) AUC (µmol/L·h) Kinetic data Reference
rat studies
4-Hydroxybenzoic acid Not applicable 50 mg/kg bw Single dose 15 155 nmol after 18 hours 0.8 nmol/mL after 2 hours EL MOHSEN 2006