Vitamin C

• Cranberry juice is high in vitamin C, with 39 percent of your daily value in one cup of juice. Vitamin C is important for keeping the immune system healthy, and it is also an important antioxidant in the body.
  
  

Urinary Tract Infections

• According to CranberryJuice.com, the juice features proanthocyanidins, which give "anti-adhesion properties" to the body. This can help to prevent and cleanse the body of urinary tract infections.
  
  

Phytochemicals

• Cranberryjuice.com also notes that cranberry juice has phytochemicals. These are similar to antioxidants in the sense that they help to prevent cancer.
  
  

Vitamin E

• One cup of cranberry juice has 15 percent of your daily recommended amount of vitamin E. According to NutritionData, vitamin E might help reduce the risk of heart attacks.
  
  

Vitamin K

• There is 16 percent of your daily recommended amount of vitamin K in a serving of cranberry juice. Vitamin K is known for helping to move calcium throughout the body.