Research Article

Application of Design of Experiment for Floating Drug Delivery of Tapentadol Hydrochloride

Figure 2

(a) Response surface plot showing the influence of Locust bean gum and Xanthan gum on floating lag time and (b) corresponding contour plot showing the relationship between various levels of two polymers.
625729.fig.002a
(a)
625729.fig.002b
(b)