Motivation – Patients face a new and complex set of choices in determining whether to electronically share their medication information with care providers. Research approach – We designed and tested a scorecard-type decision aid that structured and presented the benefits and concerns of sharing medication information to patients. Findings/Design – Patients’ sharing choices and level of understanding did not vary based on their access to the decision aid, and they often did not use the aid. Research limitations/Implications – We tested the decision aid with only neurology patients, limiting the generalizability of the findings. Originality/Value – Our study describes an instance where decisionmakers without high levels of understanding felt confident about their ability to make choices and therefore did not reference a readily available decision aid. Take away message – Decision aids, to be more useful and widely used, should be designed based on decision-makers’ behavioral manner of decision-making instead of normative decision-making paradigms.