What it is
Bladderwrack (Fucus vesiculosus) is a brown seaweed rich in iodine, a crucial mineral for thyroid hormone production. It is used to support thyroid function and metabolic processes.
Supplement · Hormonal Health
Bladderwrack (Fucus)
500 mg · vegan · gluten-free · 90 caps
hypothyroidismlow-libidoirregular-menstrual-cycles thyroid glandreproductive system
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How it works
The iodine content in bladderwrack is incorporated into thyroid hormones (T3 and T4), which regulate metabolism. Adequate thyroid hormone levels are essential for energy production and overall metabolic function.
Who should take it
Adults looking to address hormonal imbalance, low libido, irregular cycles. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
Can bladderwrack help with weight loss?
Bladderwrack's iodine content can support thyroid function, which in turn influences metabolic rate. An optimized metabolism may indirectly aid weight management efforts, but it is not a direct weight-loss agent.
How long does it take to see results?
Hormonal shifts and metabolic effects typically become measurable after 4-12 weeks of consistent daily dosing.
Is bladderwrack safe for everyone?
It is not recommended for pregnant or breastfeeding women without medical supervision. Those with thyroid disorders or on thyroid medication should consult a healthcare provider due to potential interactions.
Research
6 studies · 2010–2024
Evidence grade
ABCD
C · C · emerging-to-moderate human evidence for hormonal balance
From the blog
Editorial notes
SacredBod's longer take on Bladderwrack (Fucus) — context the structured blocks above don't capture.
About Bladderwrack (Fucus)
Bladderwrack (Fucus) is a hormonal health supplement used to support hormonal balance. Seaweed iodine for thyroid and metabolism. It is available in capsule form and dosed for adults in India and internationally. As a western-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol. Bladderwrack (Fucus) works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the endocrine system, thyroid, reproductive system, and effects are dose-dependent, typically becoming measurable within 4-12 weeks for hormonal shifts. Consistency matters more than dose size for this category.
Evidence
Bladderwrack (Fucus) carries an evidence grade of C in the SacredBod catalog, reflecting emerging human evidence for hormonal balance. Seaweed iodine for thyroid and metabolism. Benefits are cumulative rather than immediate, typically becoming noticeable within 4-12 weeks for hormonal shifts, and individual response varies.
Dosing
A typical dose is 500 mg, taken with food, usually in the morning. Start at the lower end, assess tolerance, and stay consistent; more is not automatically better.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
Who it’s for
Adults looking to address hormonal imbalance, low libido, irregular cycles. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
As part of the Hormonal Health category, Bladderwrack (Fucus) can be used on its own or layered into a broader protocol — see the Goes with panel for evidence-aligned pairings.
Added to your stack.