Novo Nordisk A/S’s blockbuster drug Wegovy was targeted for price cuts by the US government and suffered a setback in a new trial, adding to growing threats to the Danish company’s early dominance in the surging market for new weight-loss treatments.

The US plans to slash the price it pays for the Novo Nordisk A/S blockbusters Ozempic and Wegovy, the latest drugs to be targeted under legislation that’s expected save the government more than $200 billion over a decade.

The U.S. Centers for Medicare and Medicaid Services released its list of drugs covered under Medicare Part D selected for the second round of the program Jan. 17.