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Botanical

Fucoxanthin

Fucoxanthin is a carotenoid pigment found in brown seaweeds such as wakame and in other algae. It gives them their brownish color.

LongevityCardiovascularWeight ManagementOrgan 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
Cholesterol balanceCardiovascularModerateBNo linked study
Weight lossWeight ManagementModerateBNo linked study
MetabolismWeight ManagementModerateBNo linked study
Cellular health & agingLongevitySmallCNo linked study
Liver healthOrgan FunctionSmallCNo linked study
Every rating with its studiesGrouped by health goal, with the publications behind each rating

What is fucoxanthin?

Fucoxanthin is a carotenoid found in brown seaweed and other algae. Laboratory and animal research suggests effects on fat metabolism; those mechanisms help explain the interest but do not establish weight loss in people. 1

Why people take it

Energy18.8%
Weight Management16.7%
Detox10.4%
Cardiovascular10.4%
Immune Support8.3%
Cognition6.3%

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

Questions people ask

How much has been studied?

The metabolic-syndrome trial used 12 mg daily for 12 weeks. That is a study regimen, not an established supplement recommendation. 2

Does it help everyone lose weight?

No such conclusion follows from the 2024 trial, which found no additional weight loss. 3

Are the promising metabolic findings conclusive?

No. The metabolic-syndrome findings come from a small, short trial with limited placebo-comparison detail in its abstract. 2

Sources