About Ecklonia cava (brown seaweed) extract
Ecklonia cava is a brown seaweed rich in phlorotannins. Several small, mostly manufacturer-associated randomized placebo-controlled trials (Seapolynol brand) show benefits for body fat, oxidized LDL, antioxidant enzyme activity, and lipid levels. Sample sizes are modest and independent replication is limited.
What Ecklonia cava (brown seaweed) extract supports
- Small RCTs show improved antioxidant markers and lipid profile — mostly manufacturer-funded studies, independent confirmation limited
How much Ecklonia cava (brown seaweed) extract to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
144–360
mg
RCTs on the branded Seapolynol extract used 144-360mg/day.
Clinical evidence
Moderate clinical evidence. Multiple small RCTs (mostly industry-associated) support antioxidant/lipid benefits; larger independent trials are lacking.
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