If you’re looking for a blue spirulina powder, Lone Star Botanicals Organic Blue Spirulina Powder is a top choice. What to know before you buy a blue spirulina supplementPowderThe majority of blue spirulina comes in powder form. Because it’s an extract from regular spirulina, blue spirulina isn’t as nutrient-dense as the whole food but it also doesn’t have the fishy taste of regular spirulina. Top blue spirulina supplementLone Star Botanicals Organic Blue Spirulina PowderWhat you need to know: This high-quality blue spirulina powder packs a powerful punch. Top blue spirulina supplement for the moneyDouble Wood Supplements Blue Spirulina PowderWhat you need to know: This lower-cost blue spirulina is as potent as the top choice; it’s just not organic.