An official with the Chinese Pharmaceutical Enterprises Association stated that the cost of bribes generally makes up to 20 percent of the total cost of a medicine in China.
In total, costs associated to sales expenses contributes to 30 to 40 percent of the total cost of a drug. The illegal payments of bribes is included in that percentage.
(Effects of corruption on the economy.)
Source: “Bribery increases medicine prices by 20 pct: expert,” People’s Daily Online, July 29, 2013.