... Spirulina contains an unusually high amount of protein with, between 55% and 77% by dry weight, depending upon the source. ... It is rich in gamma-linolenic acid (GLA), and also provides alpha-linolenic acid (ALA), linoleic acid (LA ... stearidonic acid (SDA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic acid (AA). Spirulina contains vitamin B1 (thiamine), B2 (riboflavin ...