Modifies provisions relating to tobacco product regulations

HB 503 raises the minimum age for purchasing tobacco, alternative nicotine products (like nicotine pouches), and vapor products (e.g., e-cigarettes) from 18 to 21 years. It requires retailers to display prominent warning signs stating sales to those under 21 are illegal and mandates child-resistant packaging for nicotine liquid containers sold retail. The bill also requires annual reports to the legislature on enforcement efforts targeting underage sales. These changes directly affect retailers, manufacturers of nicotine products, and individuals purchasing such items.