The 1910 revisions were designed to restrict all narcotics, including cannabis, as poisons therefore requiring a doctors prescription and limiting sales to pharmacies only. The first instance of the 1906 Act was enacted by the District of Columbia in the same year as 'An act to regulate the practice of pharmacy and the sale of poisons in the District of Columbia, and for other purposes'. The act was again updated in 1938 to the Federal Pure Food, Drug, and Cosmetics Act of 1938 which is still current as of the early 21st century. To date, marijuana remains under this law defined as a "dangerous drug".