Nutrients are present in all the fruits but in different quantities. Hence, it is essential to be aware of the nutritional value of fruits before we add them to our health routine. Guava vs Elderberry Nutrition will help you choose the best fruit among the two. Carbs in Guava and Elderberry are 14.30 g and 18.40 g respectively. The protein content of Guava and Elderberry is 2.50 g and 0.66 g. Protein to carb ratio of any fruit must be approximately 1.34. Protein to carb ratio of Guava is 0.18 and in Elderberry, it is 0.04. Nutritional value of fruits is incomparable to other food items. They provide all the vital nutrients required for proper functioning of our body.