BEIJING – When a resident in China’s central Hubei province surnamed Li found out that Plavix (clopidogrel) tablets, a best-selling blood thinner made by French firm Sanofi, purchased the day earlier for his ailing father soon became strange and “soggy”, he realized something was not right.
Li's father, who recently underwent heart surgery, needed the antiplatelet agent to prevent blood coagulation. When Li came across a...