Randomised controlled trial
ATTAIN-1
ATTAIN-1 investigators, NEJM 2025
- Participants
- 3,127
- Duration
- 72 weeks
- Comparator
- vs. placebo, alongside lifestyle intervention
Adults with obesity taking the highest studied dose of orforglipron once daily lost on average around 11–12% of baseline body weight over 72 weeks versus roughly 2% on placebo. Trial results are averages and individual response varies.

