Companies are competing in the weight loss drug market, with Zealand Pharma, Viking Therapeutics, Terns Pharmaceuticals, Structure Therapeutics, Altimmune, Pfizer, and Amgen developing new treatments. Eli Lilly and Novo Nordisk lead with drugs like Ozempic and Mounjaro, also working on next-gen drugs. The market could reach $100 billion by 2030, with Lilly and Novo expected to dominate due to first-mover advantage and ongoing research into additional health benefits.