Detailed nutrition comparison for spirulina vs egg. Spirulina has signficantly more Vitamin C than egg, and it is an excellent source of dietary fiber, iron and potassium. Egg is an excellent source of Vitamin A. Spirulina has more thiamin, riboflavin, niacin, pantothenic acid and Vitamin B6, however, egg contains more Vitamin B12. Egg has signficantly less carbohydrates than spirulina, and it is a great source of Vitamin D. Both spirulina and egg are high Protein Egg, Sources Of Vitamin A, Pantothenic Acid, Linoleic Acid, Vitamin B6, Vitamin K, Nutritional Value, Vitamin B12, Dietary Fiber