Teva Pharmaceutical Industries Ltd (NYSE:TEVA), the primary producer of Adderall, faced shortages last year due to a lack of factory workers. The shortage led customers to seek other options, depleting supplies from competitor companies. Despite calls from the U.S. government to increase production, major players, including Teva, have announced no plans to enhance their output. The U.S. Drug Enforcement Administration imposes limits on ADHD medication production, which some producers argue prevent them from fully addressing demand.