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.

Stock prices for Novo Nordisk fell by about 3% at market open after the Biden administration selected its revolutionary drugs for mandatory price negotiations.

The Biden administration announced Friday that Ozempic, Wegovy and 13 additional drugs will now be covered under Medicare Part-D for price negotiations, the next round of negotiations under the Inflation Reduction Act passed by President Joe Biden in 2022.