Figure 5.
Effect of long-term administration of Ginkgo biloba extract (100 and 200 mg/kg) and verapamil (40 mg/kg) on the liver tissue/serum ratio of venlafaxine in rats challenged with single oral dose of venlafaxine (20 mg/kg); n: Number of animals; values with non-identical letters are significantly different (P < 0.05)