The least costly pharmacy for cancer supportive care medications over time: the logistic toxicity of playing catch up

Abstract Purpose: No single pharmacy in an urban zip code is consistently the least expensive across medications. If medication prices change differently across pharmacies, patients and clinicians will face challenges accessing affordable medications when refilling medications. This is especially pertinent to people with cancer with multiple fills of supportive care medications over time. We evaluated if the lowest-priced pharmacy for a formulation remains the lowest-priced over time. Methods: We compiled generic medications used to manage nausea/vomiting (14 formulations) and anorexia/cachexia