Fig. 3
From: Pharmacokinetic incompatibility of the Huanglian-Gancao herb pair
Intestinal absorption and efflux of berberine in the Huanglian extract (HLE) or the Huanglian-Gancao extract (HL-GCE) (mean ± SD, n = 6). a, Absorption of berberine at a low concentration (200 μg/mL); b, Efflux of berberine at a low concentration (200 μg/mL); c, Absorption of berberine at a high concentration (10 mg/mL)