Definition of the problem: The development and use of drugs aimed at a positive influence on the cognitive decline in patients suffering from Alzheimer's disease raises a number of ethical issues. Arguments: Among other things, these issues are concerned with the significance of these drugs for the patient's subjective well-being and quality of life and with aspects of informed consent to the use of these drugs, particularly in connection with their use in scientific medical research. Conclusion: The value and significance (...) of antidementia drugs depends not only on their effect on cognitive decline, but also on their wider significance for patients' quality of life and their primary carers. The subjective experience of those directly involved deserves more attention in research and practice. (shrink)