Which campaign turned Alka-Seltzer’s “Plop, plop, fizz, fizz” line into a household advertising phrase?

Alka-Seltzer turned “Plop, plop, fizz, fizz” into a household advertising phrase in its 1950s campaign.

The line described the sound and appearance of two tablets dissolving in water. Its catchy rhythm made the product’s preparation easy to remember and gave viewers a small sensory demonstration of how the effervescent antacid was used.

The jingle was associated with songwriter Tom Dawes, who later became known for work with the group the Cyrkle. Alka-Seltzer’s advertising also used memorable visual characters, including Speedy Alka-Seltzer, to reinforce the brand in television and print.

The wording is sometimes quoted without its final phrase, “fizz, fizz,” or incorrectly treated as a product instruction requiring a particular number in every context. The campaign’s famous wording was a mnemonic device for the brand’s recommended two-tablet presentation, not a general description of all antacid use.