Blueberries are nutrient-packed superfoods. They are an excellent source of vitamin C, vitamin K, manganese, and fiber. However if you don’t have access to fresh blueberries, here are a few alternatives you can try. Blueberries are nutrient-packed superfoods. They are an excellent source of vitamin C, vitamin K, manganese, and fiber. However if you don’t have access to fresh blueberries, here are a few alternatives you can try. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle