The Zhitong Finance App learned that Viking Therapeutics (VKTX.US) surged nearly 50% before the market on Tuesday, after the biotech company announced that its experimental obesity drug VK2735 helped patients maintain most of their weight loss results while reducing the frequency of use from once a week to once every two weeks.

The Zhitong Finance App learned that Viking Therapeutics (VKTX.US) surged nearly 50% before the market on Tuesday, after the biotech company announced that its experimental obesity drug VK2735 helped patients maintain most of their weight loss results while reducing the frequency of use from once a week to once every two weeks.