What side effects does spirulina cause?

Spirulina, also known as blue-green algae, may have side effects in some cases.

If it is grown in controlled settings and kept free of harmful contaminants, it produces no significant side effects. However, some spirulina harvested from open ponds may be contaminated with microorganisms that can harm the liver, as well as toxic heavy metals. If you consume contaminated spirulina, you could experience nausea, stomach pain, vomiting, weakness, thirst, rapid heartbeat and even death. Children are particularly susceptible to side effects from contaminated spirulina.
Based on information from iGuard.org, a free medication monitoring service, 12% of patients experience side effects while taking spirulina. Some of the side effects reported by iGuard members include itching and rash. Please follow up with your doctor or other healthcare provider if you are experiencing any symptoms that worsen or do not go away.

Continue Learning about Dietary Supplements

Dietary Supplements

Whether you're visiting the drug store, grocery or natural food shop you'll likely find an aisle where there are jars and bottles of things for you to put in your body that are neither foods nor medicines. Ranging from vitamins an...

d minerals to fiber and herbal remedies, these supplements are not regulated in the same way as either food or medicine. Some of them are backed by solid research, others are folk remedies or proprietary cures. If your diet does not include enough of certain vitamins or minerals, a supplement may be a good idea. Natural treatment for conditions like constipation may be effective. But because these substances are unregulated, it is always a good idea to educate yourself about the products and to use common sense when taking them. This is even more true if you are pregnant or taking a medicine that may be affected by supplements.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.