Pharmacokinetics of Ginsenoside Rb1, Rg3, Rk1, Rg5, F2, and Compound K from Red Ginseng Extract in Healthy Korean...

Area of Science:

• Pharmacology
• Natural Products Chemistry
• Human Pharmacokinetics

Background:

• Ginseng is widely used for its health benefits, but individual differences in ginsenoside absorption are not well understood.
• Understanding the pharmacokinetics of specific ginsenosides is crucial for optimizing ginseng's therapeutic effects.

Purpose of the Study:

• To investigate and compare the pharmacokinetic profiles of key ginsenosides (Rb1, Rg3, Rg5, Rk1, F2, compound K) after oral administration of red ginseng (RG) and bioconverted red ginseng extract (BRG).

Main Methods:

• A randomized, open-label, single-dose, crossover study involving 14 healthy Korean men.
• Subjects received either RG or BRG capsules, with a one-week washout period between treatments.
• Plasma concentrations of ginsenosides were measured over time to determine pharmacokinetic parameters.

Main Results:

• Bioconverted red ginseng extract (BRG) administration resulted in significantly higher Cmax, AUC(0-t), and AUC(0-∞) for ginsenosides Rg3, Rk1+Rg5, F2, and compound K compared to standard red ginseng (RG).
• A shorter Tmax was observed for compound K following BRG administration.
• These findings indicate a potentially higher absorption rate of bioactive ginsenosides from BRG.

Conclusions:

• Bioconverted red ginseng extract (BRG) demonstrates superior pharmacokinetic properties for several key ginsenosides compared to red ginseng (RG).
• BRG may offer enhanced bioavailability of active compounds, potentially leading to improved therapeutic efficacy and pharmacological activity of ginseng.
• This study provides essential pharmacokinetic data for understanding ginseng's complex bioactivity.