Which of the following statements about drug price listings is correct?

The assertion that all pharmacies must provide a retail price list upon request is correct because it aligns with regulations that ensure transparency and accessibility of drug pricing for consumers. Pharmacies are required to maintain a listing of their retail prices, which includes both prescription and over-the-counter medications. This transparency is vital for allowing patients and healthcare providers to make informed decisions regarding medication purchases and managing healthcare costs.

Providing a retail price list upon request ensures that patients have access to the information needed to compare prices and find the most affordable options available. This requirement is particularly important in promoting competition among pharmacies and helping consumers understand their options in the marketplace.

The other statements pertain to regulations that do not apply universally or accurately reflect the laws governing pharmacies. For instance, while some pricing updates may be necessary, the specific frequency (like monthly) is not universally mandated. Additionally, exemptions for pharmacies regarding price disclosures to hospitals do not suffice under the prevailing regulations, nor is there a requirement for price lists to specifically detail unit prices for every medication. Thus, the need for pharmacies to provide a price list upon request remains the most accurate statement regarding drug price listings in this context.