1992 ad for Horlicks

Horlicks is the name of a company and of a malted milk hot drink, which is claimed to promote sleep when consumed at bedtime. There is, however, no evidence that malted milk directly promotes sleep, merely staves off hunger pangs that may disturb sleep.^[1] It is manufactured by GlaxoSmithKline in the United Kingdom, India and Jamaica.

Info gleaned from Wikipedia