This paper critically analyses conscientious objection to abortion in the context of the new regulation of pregnancy termination in Chile. It argues that adequate regulation should not be blind: The bioethical requirements that seek to balance the interests involved must consider the legal regulation of the interests at stake, the context in which they are implemented, and, fundamentally, the effectiveness of the solutions adopted. Attention should be paid to the risks involved in the political use of conscientious objection to prevent the implementation of women's reproductive rights. In describing the process of the entrenchment and expansion of conscientious objection to abortion in Chile, we show how this process has overprotected conscience and how the risks of undermining the effectiveness of the new abortion legislation hinder the enjoyment of rights entrenched by the law.