In November 2016, Colorado voters passed Proposition 106, the Colorado End of Life Options Act, by a nearly 2-to-1 margin.1 Colorado thus became the fourth US state to have a medical aid in dying (MAID) law. As with other MAID laws, the Colorado law allows an “eligible terminally ill individual with a prognosis of six months or less to request and self-administer medical aid-in-dying medication in order to voluntarily end his or her life”2; allows physicians to prescribe these medications2; and provides additional regulations, such as the process of determining eligibility (eg, a determination must be made by 2 physicians or include an assessment of capacity).