This randomized controlled trial seeks to test the effect of reformatted prescription drug container labels, compared to usual labels, on participants' understanding of their medications. The study will also assess the effect on self-efficacy and self-reported medication adherence. English and Spanish speaking patients are eligible, with a planned sample size of up to 500 adults.

Inclusion Criteria:

• Be at least 18 years old,
• Fluency in English or Spanish
• Manage their own prescription medicines, and
• Have recently filled at least 1 new prescription medication (e.g, a medicine or medication dose that they have not taken before) and have their new prescription bottle information with them.

Exclusion Criteria:

• Excludes health professionals (such as a doctor, nurse or pharmacist)
• Too ill to participate in an interview
• Do not have a telephone
• Having visual acuity worse than 20/50 via Rosenbaum Visual Acuity exam (eyechart)
• Persons picking up new medicines for others
• Inability to communicate in either Spanish or English
• Overt psychiatric illnesses, overt delirium or dementia