Spirulina Side Effects and Dangers You Should know

Overview

Spirulina is generally safe for most people, but it can have some side effects and downsides in certain situations. Wild-harvested spirulina may contain toxins if it grows in water contaminated with heavy metals, bacteria, or microcystins. Consuming large quantities of these toxins can harm the liver. However, spirulina cultivated in controlled environments has lower levels of microcystins because researchers have developed methods to remove and limit these toxic compounds during production. To ensure your safety, make sure you consume spirulina that is free of microcystins.

Side effects

While spirulina is generally considered safe, there are some potential side effects and dangers you should know about.

1. Contamination with toxins: Spirulina can be contaminated with heavy metals, bacteria and other harmful particles, which can be toxic to your liver (1).
2. Worsening autoimmune conditions: Spirulina can strengthen your immune system, which can exacerbate autoimmune conditions such as lupus, multiple sclerosis and rheumatoid arthritis (2, 3).
3. Slowed blood clotting: Spirulina can thin your blood and increase the risk of bruising and bleeding, which can be dangerous for people with bleeding disorders or those who are on blood thinners (4, 5).
4. Allergic reactions: Some people may be allergic to spirulina, which can cause fatal reactions in severe cases (6).
5. Interaction with medications: Spirulina can interact with immunosuppressants, blood thinners and diabetes medications.
6. Side effects: Spirulina can cause headaches, diarrhea, bloating and gas in some individuals.

These side effects can be minimized by choosing a high-quality spirulina supplement from a reputable brand. If you experience any adverse effects, discontinue use and consult with a healthcare professional.

You may also like: Health Benefits of Spirulina: Dosage and Uses

Conclusion

Spirulina can have side effects for some individuals, so it is essential to consult a healthcare professional before taking it, especially if you are taking any medications. They can help you navigate potential interactions and ensure safe use. Another way to ensure you’re getting safe spirulina without toxins is to buy products from reputable brands. Reputable brands are tested by third-party organizations like the U.S. Consumer Lab, NSF International, or USP Pharmacopeia.