Hailed by experts as a game-changer, Sovaldi, which has been on the market since 2013, costs around USD 1,000 per pill in the US or USD 84,000 for a single course of treatment, according to a US Senate report released last December.
The drug is now being sold nationally in a Pakistani pharmacy chain for around USD 314 per 28 tablets, while the government is urging local manufacturers to produce generic copies on an urgent basis.
"These deaths are caused by advanced liver disease spanning over a period of 20-30 years," he added.
"The government had to act urgently and even before the formal registration of the drug in the country, it gave special permission to import Sovaldi tablets from the US."
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Another official at the drug registration authority said the government was exploring the option of cheaper alternatives.
"We are encouraging local manufacturers to produce generic drugs on a priority basis which are safe, efficacious and affordable," the official said.
Gilead Sciences, which makes Sovaldi, has been criticised in the US for the drug's cost.
The lofty price, set by Gilead, placed Sovaldi and its follow-up drug Harvoni out of reach of many consumers, the US Senate report said.
Hepatitis-C is a blood infection transmitted via contaminated needles, sexual intercourse, and from pregnant mothers to their unborn children.