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Lilly pill maintains weight loss after switching from injectables in trial

By Thomson Reuters Dec 18, 2025 | 5:48 AM

Dec 18 (Reuters) – Eli Lilly’s oral pill, orforglipron, helped maintain weight loss in patients switching from injectable versions of GLP-1 drugs, the company said on ‍Thursday, in a boost to deliver a more convenient obesity treatment option.

An oral weight-loss pill would help Lilly further widen its lead over Novo Nordisk.

Both Lilly and Novo are awaiting U.S. regulatory approvals for their pills, with a decision on Novo’s ‌oral Wegovy expected later this year and ‌on Lilly’s orforglipron early next year.

In the late-stage trial, patients who took orforglipron for 52 weeks, after an initial treatment period of 72 weeks with Wegovy or Zepbound, showed superior weight maintenance ​compared to placebo, Lilly said.

Patients who switched from Wegovy maintained their previously achieved weight loss with an average ‍difference of 0.9 kilograms (kg), while ​those who switched from Zepbound maintained it ​with an average difference of 5 kg.

The most commonly reported side ‍effects were mild-to-moderate and gastrointestinal, consistent with previous studies on orforglipron.

Lilly’s pill helped patients lose 12.4% of their body weight in a late-stage study. In a separate trial, Novo’s pill led to a 16.6% reduction in weight.

Lilly ‍was granted a voucher for its pill in November as part of a deal with the Trump administration to lower the ‍prices of its ‍weight-loss medicines for government programs and ​cash-paying patients.

According to a Reuters report, leaders at ​the ⁠U.S. Food and Drug Administration have pressed ‌internally for reviewers to speed up their evaluation of orforglipron, after the company pushed for a faster timeline.

The agency could decide on Lilly’s pill as early as March 28 if the new timeline is adopted.

(Reporting by Christy Santhosh in Bengaluru; Editing ⁠by Anil D’Silva)