There are many actors in the drug supply and distribution system, and little is known about the share of drug expenditures going to each, making it more difficult to rein in costs. JAMA Health Forum Associate Editor, Julie Donohue, PhD, and Deputy Editor, Melinda Buntin, PhD, speak with Neeraj Sood, PhD, lead author in a JAMA Health Forum study that unpacks the distribution of insulin expenditures, revealing that a surprising share goes to intermediaries. They also spoke with Bernie Good, MD, who wrote an invited commentary about this study.

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