Baba S., Osakabe N., Natsume M., Terao J. (2004) Orally administered rosmarinic acid is present as the conjugated and/or methylated forms in plasma, and is degraded and metabolized to conjugated forms of caffeic acid, ferulic acid and m-coumaric aci. Life Sci 75:165-78 PubMed (15120569)

Urine analysed after enzymatic deconjugation

Excretion in Urine (%)
Number Dose Multiple Dose Duration Time (hours) Polyphenol Source
Name as described in publication
0 8 18
1 50 mg/kg bw Single Dose 0 0.03 1.7
rosmarinic acid in deoinized water