Pharmacokinetics of dimemorfan phosphate tablets in healthy Chinese volunteers. Investigate the pharmacokinetic properties of the antitussive dimemorfan phosphate tablets in healthy male and female Chinese volunteers after single and multiple-dose administration; and to evaluate the food-effect on pharmacokinetics of dimemorfan. 12 subjects received a single dose of 10 mg and 40 mg dimemorfan phosphate tablets, respectively in study stage 1. Another 12 subjects received a single dose of 20 mg dimemorfan phosphate tablets under fed conditions, a single dose of 20 mg dimemorfan phosphate tablets under fasting conditions and multiple-dosing of 20 mg dimemorfan phosphate tablets 3 times per day, respectively in study stage 2. The washout between each treatment was 1 week. Plasma dimemorfan
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