Live Forever Juice is a fake product that was created for educational purposes by FDAImports, a consulting company that specializes in advising companies how to comply with FDA regulations. The idea was to make a food product whose packaging was full of illegal claims, then walk people through why the claims are illegal. (via: The Food Watchdog).
The company handed out samples of Live Forever Juice at a recent trade fair in Baltimore. They also have an accompanying website, liveforeverjuice.com, on which they have some videos that explain what kind of claims companies are legally allowed to make on the packaging of their food products, and what claims they can't make. Of course, all claims have to be "true, adequately substantiated, and not misleading." It's the latter category, misleading claims, that are the most interesting, since companies come up with all kinds of ways to make claims that are technically true, but nevertheless misleading. And the FDA has regulations to try to prevent this.
For instance, labels often declare that the product is a "great source" of a nutrient, such as Vitamin C. But if the label says this, then the food must contain at least 20% of that nutrient's recommended daily intake (RDI). Sometimes labels will use more ambiguous language, such as boasting that the food "contains" a nutrient, which could be technically true even if the food only has a tiny amount of it. But the FDA feels that even this more ambiguous claim implies the food is a good source of the nutrient. So the food still must offer at least 10% of that nutrient's RDI in order to make that claim legally.
FDAImports also created a Live Forever Juice party video that offers a "High-Octane Motivational Video Loop with Unicorns." They caution that you shouldn't watch it if you're prone to seizures.