The Food and Drug Administration approved Eli Lilly’s weight-loss drug Zepbound on Dec. 27 to treat sleep apnea, a common but potentially serious sleep-related breathing disorder, making it the first medication for certain patients with the condition.

Eli Lilly has asked to join in opposing a lawsuit brought by compounding pharmacies against the U.S. Food and Drug Administration over the agency's decision that Lilly's blockbuster weight-loss and diabetes drugs are no longer in short supply.

Eli Lilly is seeking to end a lawsuit filed by a pharmacy trade group against the Food and Drug Administration (FDA) by joining as a defendant, stating it wants to end the “entitlement” some pharmacies have practiced in mass-marketing copies of its highly popular GLP-1 medications.