What is the doctrine of double effect, and how is it used in palliative care?

• A. Good effect only
• B. Bad effect must be intended
• C. An action with both good and bad effects may be permissible if the bad effect is unintended and proportionate to the good
• D. Always permissible if patient is terminal

Answer: (C)

The doctrine of double effect says you may perform an action that has both a good and a bad outcome if the bad outcome is not intended, is not the means by which you achieve the good effect, and there is a proportionate reason to permit it. In palliative care this matters when relieving suffering might carry a risk that could shorten life. The key is the clinician’s intent: the primary aim is to relieve pain or distress, not to cause death. If the bad effect (for example, a possible life-shortening consequence) is foreseen but not intended, and it is proportionate to the serious relief being provided, the action can be ethically permissible. This framework helps distinguish practices like giving high-dose opioids for refractory pain from euthanasia, because the death is not the goal and the overall balance favors alleviating suffering.