As the product patent on popular diabetes drug Vildagliptin has expired in India on December 9, some domestic drug firms have launched the generic versions of the drug in the country that are much cheaper than the patented medicine.

As the product patent on popular diabetes drug Vildagliptin has expired in India on December 9, some domestic drug firms have launched the generic versions of the drug in the country that are much cheaper than the patented medicine.