[Comparison of multiple dosage bioavailability between phenylpropanolamine controlled release suspension and conventional tablet in healthy volunteers].

Compared studies between the pharmacokinetics of phenylpropanolamine (PPA) controlled release suspension (CRS) and that of PPA conventional tablet in 10 healthy volunteers showed that the maximal plasma concentration (Cmax), the minimal plasma concentration (Cmin) and the fluctuation index (FI) values were 169.06 +/- 7.76 ng.ml-1, 82.80 +/- 4.29 ng/ml-1 and 0.20 +/- 0.04 respectively for PPA CRS, 180.5 +/- 8.91 ng.ml-1, 76.18 +/- 5.97 ng.ml-1 and 0.81 +/- 0.07 respectively for the conventional tablet. The Cmax and FI of PPA CRS were significantly lower compared with those of the conventional tablet (P < 0.01) during steady state. The Cmin of PPA CRS was higher than that of the conventional tablet (P < 0.05).