
The court ruled that the beverage would be taking unfair advantage of Viagra's reputation. The court also expressed concern that confusion between the products could be medically dangerous, which seems like a bit of an exaggeration.
So what is Viaguara? Some sort of energy drink, probably containing guarana, possibly containing alcohol. Whatever it is, it's going to have to go to market with a much less exciting name, which hasn't proven to be an issue for, say, 5-Hour Energy. Although a product called 5-Hour Viaguara would really fly off the shelves.