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
human studies
Homovanillyl alcohol Not applicable 20 mg Single dose 6 9 ┬Ámol/L after 24 hours VISIOLI 2003
Hydroxytyrosol Not applicable 20 mg Single dose 6 4 ┬Ámol/L after 24 hours VISIOLI 2003