They are popular among those who suffer from lactose intolerance since the cookies contain no dairy products; they are also a common sweet food for vegans because of their lack of animal ingredients. The company also offers wheat-free cookies. The cookies are also free of high fructose corn syrup.
The Newman-O's theme song features the following lyrics:
"You might, m'lady, tweak my nose.
You could, m'lord, step on my toes.
But Heaven help those poor bozos,
who try to filch my Newman-O's" 
The theme song was sometimes played on Newman's Own commercials in the 1990s, in the background of a boy eating them.
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