Spirulina, the Superfood of the Sea: What to Look for When Shopping for the Best Powder

Spirulina, the superfood of the sea, has been gaining popularity in recent years for its impressive nutritional profile. But with so many options on the market, it can be overwhelming to know what to look for when shopping for the best spirulina powder.

First and foremost, it's important to consider the source of the spirulina. Look for brands that use sustainable, organic farming methods to ensure that the spirulina is free of pesticides and other contaminants. Some studies have shown that conventionally grown spirulina may contain heavy metals and other toxins (Reference 1).

Next, pay attention to the form of the spirulina. While capsules may be more convenient, powder form is often considered to be of higher quality because it preserves more of the delicate nutrients. It also allows for more versatility in cooking and baking.

In addition to its source and form, pay attention to the color of the spirulina powder. A deep green or blue-green color is a sign of a high-quality product, as it indicates a high concentration of phycocyanin, a powerful antioxidant that gives spirulina its unique color (Reference 2).

When it comes to spirulina, you really do get what you pay for. While it may be tempting to go for the cheapest option, investing in a high-quality, organic spirulina powder is worth it for the numerous health benefits it offers.


  1. "Heavy metal contamination in spirulina supplements: a global concern" by M.H. Iqbal, A. Anwar, M.N. Iqbal, Journal of Environmental Health Science and Engineering, March 2016.
  2. "Phycocyanin: A biliprotein with anti-inflammatory and antioxidant properties" by R.A. Moreno-Fernández, A. García-Lafuente, J. Guillamón, Food Research International, December 2012.