81 patent-free drugs have become cheaper in the midst of the corona epidemic. At the same time, some medicines included in the required list may become expensive from next month. This may include other essentials including painkillers, antiinfectives, cardiac and antibiotics.The central government has allowed price changes based on the annual retail price index (WPI). NPPA, a drug price control body, said on Friday that the government has issued a 0.5 percent annual change in WPI for 2020. At the same time, pharma companies are very angry about this increase. Companies say that the cost of pharmaceutical production has increased by 15 to 20 percent.On this basis, companies are planning to increase the prices of medicines by an average of 20 per cent. However, the time to come now will tell what the companies decide after the start of the new financial year and what is the new market price of medicines. There will be no change in the price of heparin injection used in the treatment of corona until September 2021.