Showing pharmacokinetics for Vanillic acid metabolite after consumption of various sources Metabolism
  Urpi-Sarda M., Llorach R., Khan N., Monagas M., Rotches-Ribalta M., Lamuela-Raventos R., Estruch R., Tinahones F.J., Andres-Lacueva C. (2010) Effect of milk on the urinary excretion of microbial phenolic acids after cocoa powder consumption in humans. J Agric Food Chem 58:4706-11 PubMed (20222713)  
Urine analysed after enzymatic deconjugation
| Excretion in Urine (nmol/mg creatinine) | |||||||
|---|---|---|---|---|---|---|---|
| Number | Dose | Multiple Dose Duration | Time (hours) | Polyphenol Source Name as described in publication | |||
| 0 | 6 | 12 | 24 | ||||
| 1 | 40 g | Single Dose | 0.41 | 5.96 | 2.29 | 1.49 | 
                cocoa powder in water
             | 
| 2 | 40 g | Single Dose | 0.43 | 9.85 | 6.88 | 2.67 | 
                cocoa powder in whole milk
             |