Victoza (liraglutide)'s patent expired, but its effect on weight loss is pitiful relative to later-generation GLP-1 agonists. Same story for Trulicity (dulaglutide), for which patent protections end in 2027.
Liraglutide is an older version that is now available as a generic, but it's results, particularly for weight loss, are far behind semaglutide, tirzepatide, etc.
Aren't there a handful of similar drugs in that class though? I wonder if some of them come off patent sooner.