The US Food and Drug Administration confirmed Thursday that Eli Lilly (LLY) has increased production of its blockbuster weight-loss drug Zepbound and type 2 diabetes drug Mounjaro, implying the company can now supply enough doses to meet current demand.

A key study used in securing FDA approval for Wegovy as a lifetime medication for weight loss was based on patients using the drug continuously for about a year and 4 months and then stopping. It found that about two-thirds regained the weight they lost. A similarly designed study had comparable results for tirzepatide (Zepbound).