Adderall is manufactured primarily in the United States at facilities like Ascent Pharmaceuticals' factory in Central Islip, Long Island, New York. The active pharmaceutical ingredients (APIs) for Adderall are mainly produced in China and India, with these raw ingredients then supplied to manufacturers in the U.S. who produce the final medication tablets. Ascent Pharmaceuticals, owned by an India-based company Hetero, is one of the key manufacturers producing a significant portion of generic Adderall in the U.S. Adderall tablets are manufactured in highly controlled, sterile environments and the production is regulated by entities like the U.S. Drug Enforcement Administration (DEA) and the Food and Drug Administration (FDA) to manage supply and ensure safety.