The site has 11.5 million unique monthly visitors, according to a September news release.
The native content series, called "Morning Spark," includes videos promoting OJ as a feel-good morning beverage and positive way to start the day. Kutcher's pull is helping with his network of celebrities. The video has been shared on Facebook by Adam Levine, Robin Thicke and Lil Wayne.
Marion Nestle, a professor of nutrition at New York University, has no problem with Pepsi trying to make a 8-ounce glass part of millennials' daily constitutional.
"They are trying to sell orange juice, " said Nestle. "That's their job."
Although she recommends a real orange over the processed juice, "an 8-ounce glass or orange juice is just fine. When I was growing up, we had 6-ounce juice glasses. It took care of your need for really important vitamins."
Nestle, who is not known for her soft spot when it comes to Big Beverage, gave the Purchase, NY-based food, snack and beverage company a nod.
"Pepsi has pledged to put real money into advertising its healthier products. Let's give them credit for doing that in this case."
Pepsi said OJ is a nutritious eye opener, with vitamin C, essential potassium and folic acid, crucial to women of childbearing age. But David Ludwig, a professor of nutrition at Harvard's T.H. Chan School of Public Health, cautioned consumers before they jump on the orange juice express.
Millennials are less likely than non-millennials to feel badly if they could no longer drink 100 percent orange juice (take it or leave it attitude).
"Fruit juice and whole fruit are not the same," Ludwig said. "We need to be encouraging whole fruits while limiting consumption of concentrated or processed sugars. And most commercial fruit juices are in that (processed sugars) category."
"This campaign flies in the face of national recommendations to increase consumption of whole foods and limit highly processed carbohydrates. Commercial fruit juices clearly fall into that second category."
Why did Pepsi pick millennials? Upside.
The company's research shows there is tremendous room for growth among the 75 million members in the demographic, which is considered ages 18 through 34.
"Millennials no longer consider OJ a breakfast staple and could really live with or without it," according to research by the Florida Department of Citrus. "That is why creating an emotional and cultural connection to orange juice is so important to the brand."
Pepsi is hoping its feel-good campaign creates a connection with OJ that is nonexistent.
"Millennials are less likely than non-millennials to feel badly if they could no longer drink 100 percent orange juice (take it or leave it attitude)," according to citrus research.
It's still not going to be easy.
"Millennials are obsessed with health," said Gabrielle Bosche, a strategist who consults with companies on how to reach younger consumers. "Unless it's cold pressed and organic, this generation isn't interested in juice.
"Juice companies that thrive with this generation have packaging that makes it look local, tout the health benefits and understand that it is about what the brand represents, than what the product actually is."