Figure 5From: Hypotensive effect of Gentiana floribunda is mediated through Ca++ antagonism pathway Concentration-response curves of phenylephrine (PE) in the absence and presence of (A) crude extract of Gentiana floribunda (Gf.Cr), (B) verapamil and (C) phentolamine in isolated rat aortic ring preparations. Values shown are mean ± SEM, n = 4. * p < 0.05, ** p < 0.01 and *** p < 0.001 compared to respective concentrations values in the PE control curves.Back to article page