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Botanical

Chlorella

Chlorella is a single-celled freshwater green alga that contains protein, fiber, vitamins, minerals and chlorophyll.

Also listed as Chlorella Blue-Green Algae, Organic Chlorella Extract, Chlorella Extract, Organic Chlorella

LongevityEssential HealthCardiovascularGut HealthOrgan Function

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

Oxidative stressLongevityModerateBNo linked study
Essential HealthModerateBNo linked study
Cholesterol balanceCardiovascularModerateBNo linked study
Gut healthModerateBNo linked study
InflammationModerateBNo linked study
Liver healthOrgan FunctionModerateBNo linked study
All 8 rated effectsGrouped by health goal, with the publications behind each rating

What is chlorella?

Chlorella is a freshwater green alga containing protein, fiber, vitamins, minerals and chlorophyll. 1

Why people take it

Immune Support20.6%
Energy17.4%
Essential Health16%
Detox15.4%
Gut Health12.6%
Cognition3.6%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Is chlorella proven to prevent heart disease?

The newer review evaluated risk markers; it does not establish prevention of heart attacks. 2

Did every cardiovascular marker improve?

No. The earlier review found no significant improvement in HDL cholesterol or triglycerides. 3

Can I take it with warfarin?

Its vitamin K can reduce warfarin’s effect, so discuss it with the prescribing clinician. 1

Is the evidence equally certain for all results?

No. The newer review rated body mass index evidence low certainty and most other results very low certainty. 2

Sources

  1. Chlorella LactMed, National Institute of Child Health and Human Development