Does Spirulina Make You Poop?

Reviewed on 7/2/2022

A wooden scoop of spirulina powder and supplement pills
The magnesium in spirulina may help you poop, as foods that are high in magnesium can help with constipation but for some people, spirulina may cause constipation.

Spirulina is a type of blue-green algae used as a dietary supplement. Blue-green algae are high in protein, iron, and minerals such as calcium, magnesium, zinc and selenium, and vitamins A, C, E, and B.

The magnesium in spirulina may help you poop.

  • Many adults are deficient in magnesium. Consuming foods such as spirulina that are high in magnesium can help with constipation in some cases.
  • Magnesium is an electrolyte that helps draw water into the stool, making it easier to pass.
  • However, for some people, spirulina can cause constipation.

What Are Health Benefits of Spirulina?

The main health benefit of spirulina is for treating high blood pressure. Some studies have shown it to be effective for this use. 

Other health benefits of spirulina have not been conclusively proven, and more study is needed. Claims of benefits of spirulina include: 

What Are Side Effects of Spirulina?

Spirulina is considered a food and is generally well-tolerated, but it may have some side effects, such as: 

Risks and precautions for spirulina include: 

Tell your doctor before taking spirulina or any supplement because it may have unwanted side effects or interactions with medications you take. 


You are constipated if you don't have a bowel movement every day. See Answer

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Reviewed on 7/2/2022

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