No abstract

Drug manufacturers are expected to provide labeling information needed to yield safe and effective product use. However, it is not clear that consumers dose sunscreen, an over-the-counter drug, appropriately; in fact, existing evidence suggests underdosing as a common phenomenon. The objective of this study was to evaluate the effect of dispensing device and labeling on self-administered doses of sunscreen in young adults. To investigate those effects, a 2 × 2 factorial laboratory experiment crossing dispensing device (two levels) with labeling treatment (two levels) was conducted. Participants applied sunscreen from each of the four treatments; dosing concentration, measured in mg/cm2, served as the response variable. Participants ( n = 94) were recruited on the campuses of Michigan State University (East Lansing, MI) and California Polytechnic State University (San Luis Obispo, CA). Each participant applied sunscreen from each unique treatment to sites on their arms and legs (four applications). Postapplication, a survey was completed to characterize demographics, risk perception, and sunscreen use patterns. Results indicate participants applied approximately 30% less sunscreen from the pump bottles than the squeeze bottles (difference estimate of 0.3059 mg/cm2, standard error = 0.0607, p < .0001); there was no evidence of a difference based on label treatments. Post hoc recognition tests indicated only 55% of participants were able to recognize the two experimental labels they had viewed immediately following sunscreen application. Sunscreen application density was directly related to level of worry regarding skin cancer and frequency of sunscreen use (α = .05). Our results suggest the dispensing device used to deliver sunscreen impacts the dosage amount consumers apply.

Over-the-counter (OTC) medication is a convenient, affordable way for older adults to treat a variety of conditions; older consumers use more OTCs per capita than other people for varied reasons. As with any medication, OTCs carry risks. Because the labels of OTCs are frequently the only information accessed by consumers, labels designed to communicate safety information are paramount for these products. Yet, available studies suggest that consumers do not regularly access the comprehensive information in the Drug Facts Label (DFL) when making purchase or use decisions, tending to rely on information found on the front of the package. Herein, we evaluate how four OTC label formats (standard; standard/highlight; critical warnings on front/highlighted; critical warnings on front not highlighted) affect how aging participants attend to critical information. Sixty-eight participants (65+) engaged a computer-based task answering yes/no questions that required use of labeling information about the warnings or active ingredients (AI). Results indicate that AI information is found accurately and relatively quickly compared to warning information and highlighting and placement on the front of the package had little effect. By contrast, warning information was found slowly and with low accuracy with the standard label, and highlighting and front of pack placement both significantly improved performance. These results suggest that novel labelling strategies could result in more effective, safer use of OTC medicines among older consumers and provide insights that could be used by regulators as they work to improve policy focused on improving mandates for OTC labeling.

Over-the-counter (OTC) drugs have many benefits but also carry risks, such as adverse drug reactions, which are more prevalent in older adults. Because these products do not require the oversight of a physician or pharmacist, labeling plays a key role in communicating information required for their safe and effective use. Research suggests that current labels are not terribly effective at communicating potential risk. One reason for their lack of effectiveness is that few consumers attend to critical information (active ingredients and warnings) when making purchases. In two experiments, we used a change detection task to objectively evaluate how novel label designs that employ highlighting and a warning label placed on the package’s front impact attention to critical information among older participants (65 and older). The change detection task is a unique form of visual search which allowed us to assess the attentional priority of critical information among participants who were not explicitly instructed to search for this critical information. This unique aspect of the task is important given research suggesting that consumers rarely have the explicit goal of seeking out warnings and active ingredients when making OTC selections. Our results provide empirical support that both highlighting critical information and positioning it on the package’s front increase its attentional prioritization relative to current, commercial practice. Given that attending to the critical information is prerequisite to utilizing that information, strategies that elicit attention in this way are likely to reduce medication errors.