I wonder why they didn't use Cod Liver Oil (the song, or its tune) to accompany the ad? That would be more appropriate for the product, and would not 'divert from the product' to use Les' phrase.

In its present form the ad risks the disapproval of the PC brigade, who might draw attention to the (wrongly attributed) unsavoury aspects of the Captain Pugwash cartoon strips (the characters originally appeared in a UK boys' comic in the 1950s) and animated TV shows. The PC brigade would probably not care whether or not these allegations about the good Captain are true, and would most likely have the ad banned without further ado.

Cod Liver Oil and Orange Juice would be an alternative, although the Orange Juice part would be superfluous and would dilute the message the company is trying to get across.