Madison Muller | Bloomberg News (TNS) Eli Lilly & Co. is now selling vials of its blockbuster weight-loss drug Zepbound to patients for as little as $399 a month as it works to overcome supply shortages of wildly popular shots. Patients with a prescription for Zepbound can purchase a month’s supply of single-use vials through Lilly’s direct-to-consumer site starting Tuesday, the company said in a statement.