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.

Zepbound, Eli Lilly’s weight loss drug, can now be used to treat obstructive sleep apnea in adults with obesity, the FDA said.

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.