Pharmacokinetic Herb-Drug Interaction between Hibiscus sabdariffa Calyces Aqueous Extract and Captopril in Rats

Table 3

Accuracy and precision of plasma captopril detection.

Actual concentration (ng/mL)	Mean measured concentration ± standard deviation (ng/mL)	% CV	% Diff
3	3.05 ± 0.44	14.38	12.65
9	9.65 ± 1.00	10.38	12.08
40	38.74 ± 4.14	10.69	9.51
80	76.36 ± 1.19	1.56	4.54