What was the title of the episode featuring the Vitameatavegamin commercial?

The episode featuring the Vitameatavegamin commercial is titled “Lucy Does a TV Commercial.” It is the 30th episode of I Love Lucy, first broadcast on May 5, 1952, during the series’ first season.

In the story, Ricky needs a woman to appear in a television commercial, but he refuses to cast Lucy. She goes to the studio anyway and ends up taking the role in an advertisement for Vitameatavegamin, a fictional health tonic. The product’s slogan is deliberately difficult to pronounce, making Lucy’s increasingly confused delivery part of the joke.

The prop tonic contains 23 percent alcohol in the episode, so Lucy becomes progressively intoxicated during rehearsals. She then stumbles into Ricky’s live television performance, repeating the commercial pitch while disrupting his musical number. Vivian Vance does not appear in this episode; Ethel is said to be visiting her mother.

“Vitameatavegamin” is the scene’s enduring catchphrase, but it is not the episode title. The official title describes Lucy’s disastrous attempt to perform a television commercial.