Effect of quercetin on the acyclovir intestinal absorption

Zhao gang Yang, Huan Meng, Xuan Zhang, Xiao dan Li, Wan liang Lv, Qiang Zhang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


OBJECTIVE: To study the effect of quercetin on acyclovir intestinal absorption. METHODS: The everted gut sac and in vitro intestinal absorption tests were performed. The acyclovir transport quantity was determined by HPLC method. RESULTS: The everted gut sac study showed that quercetin significantly inhibited the function of intestinal P-glycoprotein P-gp . The acyclovir transport quantities from mucosa to serosa space, which incubated with 5, 10, 80 mg/L quercetin solution or 10 mg/L verapamil solution, were increased 0.3, 0.6, 1.0 and 1.0-fold higher than acyclovir alone, respectively. The transport quantity caused by inhibition of intestinal P-gp function fitted with Boltzmann equation. The in vitro intestinal absorption test indicated that the transported acyclovir from serosa to mucosa, incubated with 2, 5, 10 mg/L quercetin solution, was significantly decreased compared with acyclovir alone. CONCLUSION: Quercetin can enhance acyclovir intestinal absorption by inhibiting the function of P-gp.

Original languageEnglish (US)
Pages (from-to)309-312
Number of pages4
JournalBeijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences
Issue number3
StatePublished - Jun 18 2004
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)


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