Visioli F., Galli C., Grande S., Colonnelli K., Patelli C., Galli G., Caruso D. (2003) Hydroxytyrosol excretion differs between rats and humans and depends on the vehicle of administration. J Nutr 133:2612-5

Urine analysed after enzymatic deconjugation

Cumulative Excretion in Urine (µg)
Number Dose Multiple Dose Duration Time (hours) Metabolite
0 24
1 500 µL Single Dose 16.5 35.7
Hydroxytyrosol
2 500 µL Single Dose 8.1 17.2
Homovanillyl alcohol
Chart?cht=lxy&chs=600x300&chf=bg,s,fafafa&chxt=x,x,y&chxr=0,0.0,24.240000000000002,2|2,0.0,36.057,2&chds=0.0,24.240000000000002,0.0,36.057,0.0,24.240000000000002,0.0,36.057&chxl=1:|time+after+ingestion+(hours)&chtt=cumulative+excretion+in+urine+(µg)&chxp=1,50|3,50&chd=t:0.0,24.0|16.5,35.7|0.0,24.0|8.1,17