spirulina it is loaded with nutrients that can have powerful effects on your body and brain. spirulina is extremely high in many nutrients a single tablespoon (7 grams) of dried spirulina powder contains the following nutrients,                 protein: 4 grams, copper: 21% of the rda, iron: 11% of the rda, vitamin b1 (thiamin): 11% of the rda, vitamin b2 (riboflavin): 15% of the rda, vitamin b3 (niacin): 4% of the rda..