Fig. 5

Urine volume following the administration of placebo (control), lisinopril and H. sabdariffa in subjects with mild to moderate hypertension. Each point on the graph represents the average of at least 25 independent measurements. Error bars SEM. **P < 0.01 ***P < 0.001(H. sabdariffa vs. placebo); ^ααα P < 0.001 (lisinopril vs. placebo); ^ββ P < 0.01,^βββ P < 0.001(H. sabdariffa vs.lisinopril. All analyses were performed with two-way ANOVA with the Bonferroni posttest using the GraphPad Prism 5.0 analysis program