Is Spirulina Safe with Bentonite Clay?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Separate doses by at least 2 hours. Monitor iron and B12 levels with long-term use of both supplements together.
Why this interaction occurs
Bentonite Clay's negatively charged surface attracts positively charged minerals. Spirulina's high iron and mineral content makes it susceptible to binding within the gut lumen, potentially reducing absorption of these micronutrients by a clinically meaningful degree.
Evidence
Evidence level: limited.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 7,364 reports mentioning Bentonite Clay. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Bentonite Clay + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Spirulina interactions → · All Bentonite Clay interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.