What fallacy is illustrated when promoting a product as 'most recommended by doctors' in a commercial?

The statement "most recommended by doctors" in a commercial is an example of a Join the Bandwagon Appeal. This fallacy suggests that since a certain product is popular among doctors, viewers should also believe that it is the best choice for them. It implies that because many people (or professionals, like doctors) support or recommend the product, others should join in and do the same, thus playing on the social influence and desire to conform.

This tactic often relies on the assumption that collective endorsement equates to quality or necessity, moving the audience toward a consensus solely based on popularity or perceived authority rather than on actual evidence or rational evaluation of the product itself. By leveraging the authority of doctors to create a sense of trust and safety, the advertising strategy effectively attempts to persuade potential customers to "jump on the bandwagon" without critically assessing the product.