Greenherb supplies a premium, naturally-sourced Bladder Wrack Powder, derived from the brown seaweed Fucus vesiculosus L., commonly known as bladder wrack. Harvested from pristine, cold-water marine environments, our powder is carefully processed to preserve its rich profile of bioactive compounds, including iodine, alginic acid, fucoidan, and an array of minerals and polyphenols . This versatile, nutrient-dense ingredient offers a natural solution for thyroid support, digestive health, and overall wellness, providing the concentrated benefits of the sea in a convenient, shelf-stable powder form.
We support global customers with scalable, compliant supply and comprehensive analytical documentation, enabling the creation of innovative products that harness the unique nutritional properties of this remarkable marine botanical.
Historically Significant Source of Iodine – Bladder wrack was the original source of iodine, discovered in 1811, and has been used traditionally to support thyroid health, particularly in cases of iodine deficiency and goiter .
Rich in Unique Marine Bioactives – Contains a distinctive combination of iodine, alginic acid (a viscous soluble fiber), fucoidan (a sulfated polysaccharide with documented bioactivity), and fucosterols, offering a multi-faceted approach to wellness .
Traditional Support for Metabolic Health – Has a long history of use in traditional medicine systems for supporting healthy metabolism and weight management, though modern clinical evidence remains limited .
Digestive Health & Natural Bulk-Forming Properties – The alginic acid content provides natural bulk-forming fiber that may support digestive regularity and promote a feeling of fullness .
Rich Mineral Profile from the Sea – Naturally accumulates a broad spectrum of trace minerals from its marine environment, including calcium, magnesium, potassium, and zinc, contributing to comprehensive nutritional support.
Sustainably Harvested from Pristine Waters – Sourced from certified clean, cold-water coastal regions with rigorous testing for heavy metals and contaminants, ensuring a pure and safe product .
Clean-Label & Allergen-Friendly – A naturally plant-based, gluten-free ingredient that aligns with clean-label trends and appeals to consumers seeking whole-food, marine-derived nutrition.
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Item |
Specification |
Test result |
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Extract Ratio |
10:1 |
Conforms |
|
Physical Control |
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Appearance |
Brown Fine Powder |
Conforms |
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Odor & Taste |
Characteristic |
Conforms |
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Identification |
Positive |
Conforms |
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Part Used |
Whole Herb |
Conforms |
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Extract Solvent |
Water |
Conforms |
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Loss on Drying |
≤7.0% |
Conforms |
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Ash |
≤9.0% |
Conforms |
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Particle size |
NLT 95% through 80 mesh |
Conforms |
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Solubility |
Water soluble |
Conforms |
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Allergens |
None |
Conforms |
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Chemical Control |
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Heavy Metals |
NMT10ppm |
Conforms |
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Lead(Pb) |
NMT2ppm |
Conforms |
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Arsenic (As) |
NMT1ppm |
Conforms |
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Mercury(Hg) |
NMT1ppm |
Conforms |
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Cadmium(Cd) |
NMT1ppm |
Conforms |
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GMO Status |
GMO Free |
Conforms |
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Microbiological Control |
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Total Plate Count |
10,000cfu/g Max |
Conforms |
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Yeast & Mold |
1,000cfu/g Max |
Conforms |
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E.Coli |
Negative |
Negative |
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Salmonella |
Negative |
Negative |
Greenherb's Bladder Wrack Powder captures the essence of a seaweed that has sustained coastal communities for centuries and played a pivotal role in the discovery of iodine—an element essential for human health. This powder transforms the whole, dried thallus (body) of Fucus vesiculosus into a concentrated, versatile ingredient for modern nutritional products. It is the ideal choice for brands developing formulations in the thyroid support, metabolic health, marine mineral supplementation, and digestive wellness categories, offering a time-honored marine botanical with a unique and scientifically-interesting composition. For formulators seeking to create products that connect consumers with the therapeutic traditions of the sea, bladder wrack powder provides an authentic and nutrient-rich foundation.
Botanical Source: Fucus vesiculosus L. (Bladder wrack, Bladderwrack, Rockweed, Black tang)
Used Part: Whole Thallus (Seaweed)
Key Active Components: Iodine (typically 0.01-0.05%), Alginic Acid, Fucoidan, Fucosterols, Polyphenols, and a broad spectrum of marine trace minerals .
Appearance: Fine, olive-green to khaki brown powder with a characteristic marine aroma .
Flavor: Mild, salty, and distinctly "sea-like" or "oceanic."
Solubility: Disperses in water; the alginic acid content will hydrate and form a viscous gel.
Our process is designed to gently dry and mill the seaweed while preserving its delicate phytonutrients and mineral integrity:
Sustainable Marine Harvesting: Fucus vesiculosus is hand-harvested or sustainably collected from certified clean, cold-water coastal regions during approved seasons to ensure regeneration and environmental responsibility.
Thorough Washing & Cleaning: The fresh seaweed is immediately and repeatedly washed with clean, pure water to remove any sand, salt, epiphytes, and marine debris.
Controlled Low-Temperature Drying: The cleaned seaweed is gently dried using low-temperature air drying or freeze-drying technology. This careful process removes moisture while preserving heat-sensitive compounds like fucoidan and preventing the degradation of iodine.
Fine Milling: The dried seaweed thalli are milled into a fine, consistent powder using specialized equipment that prevents excessive heat generation, which could compromise the delicate phytonutrients.
Sieving & Standardization: The powder is sieved to achieve a uniform, consistent particle size and blended for batch-to-batch uniformity in appearance and flow characteristics.
Rigorous Contaminant Testing: Given the marine origin, every batch undergoes stringent testing for heavy metals (arsenic, cadmium, lead, mercury), microbiology, and iodine content to ensure it meets the highest safety standards for global markets .
Packaging for Stability: The final powder is packaged in moisture-proof, light-resistant materials to protect its quality and preserve its bioactive compounds.
Bladder Wrack Powder is valued for its traditional uses and unique marine-derived composition:
Supports Healthy Thyroid Function*: As a rich, natural source of iodine—an essential nutrient for the synthesis of thyroid hormones (T3 and T4)—it may help support normal thyroid function, particularly in individuals with marginal iodine intake .
Provides Essential Mineral Support*: Supplies a broad spectrum of marine trace minerals that are often lacking in modern diets, contributing to overall nutritional adequacy and supporting various metabolic processes .
Supports Digestive Regularity*: The alginic acid content acts as a soluble, bulk-forming fiber that can help promote regular bowel movements and support overall digestive health by providing a gentle, natural laxative effect .
May Support Healthy Cholesterol Levels*: The fucosterols present in bladder wrack have been studied for their potential to support healthy cholesterol metabolism already within normal range, though more research is needed .
Offers Antioxidant Protection*: Contains polyphenolic compounds that provide antioxidant activity, helping to protect cells from oxidative stress and supporting overall cellular health .
Promotes Healthy Inflammatory Balance*: Preclinical research suggests that fucoidan and other constituents may help support a balanced inflammatory response, though human studies are limited .
Bladder Wrack Powder is formulated into targeted health and wellness products:
Dietary Supplements
Thyroid support and iodine supplementation formulas (capsules, tablets)
Metabolic health and weight management blends
Marine mineral and trace element complexes
Digestive health and fiber support products
Functional Foods & Beverages
Nutrient-dense green superfood powder blends
Smoothie boosters and wellness shots
Seaweed-based seasoning blends and culinary ingredients
Traditional & Herbal Formulations
Key ingredient in European traditional medicine formulas for thyroid and metabolic support
Component in practitioner-grade herbal blends
Greenherb is your trusted partner for premium, sustainably sourced Bladder Wrack Powder. We combine responsible marine harvesting with rigorous quality control to deliver an ingredient that captures the authentic nutritional profile of this historically significant seaweed. Let us help you bring the unique benefits of the sea to your next innovative product.
Contact us today to request samples, discuss specifications, or receive a detailed quote for your project.
Greenherb — delivering the authentic, mineral-rich nutrition of the sea.
