Effect of reading additional safety information on planned use of over-the-counter analgesics.

Objectives: This study was used to test the effect on planned safe use of over-the-counter (OTC) analgesics of adding information about the potential for nonsteroidal anti-inflammatory drug (NSAID) interaction with antihypertensive medications, the potential for interaction of alcohol and acetaminophen, and NSAID ceiling effects to the Federal Drug Administration's (FDA's) OTC analgesics pamphlet.

Design: A randomized posttest-only double-blind experimental design was used to test an intervention with a comparison group reading the FDA pamphlet, and treatment group reading the pamphlet with added information.

Sample: Participants included 137 adults.