Drugmaker Eli Lilly said Thursday that an experimental pill form of popular GLP-1 medications helped people with type 2 diabetes lose an average of nearly 8% of their body weight after 40 weeks and lowered their A1C levels.

But this one, for Lilly’s first diabetes and weight-loss pill based on the GLP-1 hormone, was particularly fraught. Days before, rival pharma giant Pfizer had announced it was abandoning its oral weight-loss drug after worrying side effects involving liver problems were reported in one participant in the trial.