Is Spirulina Safe with Chlorella?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Use cautiously if taking medications with narrow therapeutic windows (e.g., lithium, digoxin). Monitor medication levels and inform your prescriber of combined algae supplement use.
Why this interaction occurs
Both Chlorella and Spirulina have demonstrated heavy metal binding and mild chelation properties. Combined use may theoretically alter absorption of co-administered medications by modifying gut lumen chemistry and transit binding dynamics.
Evidence
Evidence level: limited.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 291 reports mentioning Chlorella. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Chlorella + 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 Chlorella interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.