This paper examines marketplace and insurer web sites in five states -- Alabama, California, Florida, Maryland, and Minnesota -- to determine transparency, coverage, and out-of-pocket costs of antidepressant medications. Antidepressants are commonly used in the United States, making them an important marker of the ability of patients with prescription drug needs to choose an appropriate, cost-effective plan. While insurers tend to provide broad coverage of the array of antidepressants, there is variation by state and insurer. Plus, there is considerable room for improvement in transparency of coverage, limits, and cost-sharing requirements. We provide recommendations for such improvements.