TEL. 0120-251-334 (9:00~21:00)
Call us for orders or questions
Fucoidan AF Premium is a premium liquid fucoidan supplement developed in Japan, trusted by customers worldwide for its high-quality marine ingredients and uncompromising manufacturing standards.
Among fucoidan supplements on the market, Fucoidan AF Premium stands out with one of the highest fucoidan contents available.
This exclusive formula combines fucoidan with carefully selected ingredients such as fucoxanthin and ascophyllan, designed to support everyday wellness at a higher level.

Carefully selected ingredients are blended in a scientifically balanced formula, designed to support long-term daily wellness.
Fucoidan AF Premium is the result of extensive research and continuous refinement, created to achieve an optimal and reliable formulation.

Fucoidan AF Premium Liquid contains 430,000 mg of fucoidan in every 900 ml bottle. That equals 14,333 mg of fucoidan per 30 ml serving—an exceptionally high concentration that is difficult to find in comparable products.
Because of its high fucoidan concentration, each serving delivers significantly more fucoidan than many other liquid fucoidan supplements of the same serving size.
Many of our customers told us they were looking for a product with a higher fucoidan content, and Fucoidan AF Premium was created to meet that demand.
High concentration, however, is only part of the story. We are equally committed to quality, using carefully selected premium-grade fucoidan sourced from trusted raw materials to ensure outstanding purity and consistency.
Our fucoidan is extracted from premium Okinawan mozuku seaweed, one of the richest natural sources of fucoidan among edible seaweeds. Grown in the sunlit waters of Okinawa, this carefully selected mozuku is harvested and refined to produce high-quality fucoidan.

→ View Fucoidan AF Premium product details
Fucoidan naturally exists as a high-molecular-weight polysaccharide.
Although the term "low molecular weight" may sound as though it offers better absorption, reducing fucoidan to a lower molecular weight can alter its natural structure and make it more difficult to preserve its original characteristics.
Perhaps for this reason, most fucoidan used in scientific studies and academic research is high-molecular-weight fucoidan. In other words, many researchers continue to study fucoidan in its natural high-molecular-weight form.
Recent studies have also shown that high-molecular-weight fucoidan can be absorbed by the body.
Fucoidan AF Premium uses carefully selected high-molecular-weight fucoidan that has demonstrated favorable results in absorption-related research.
Sulfate Groups – An Important Component of Fucoidan
Sulfate groups are one of the key structural components of fucoidan. They are considered to play an important role in the unique properties and biological characteristics of fucoidan.
During the extraction and purification process, it is essential to preserve these sulfate groups. If the extraction process is not carefully controlled, some sulfate groups may be lost, which can affect the quality of the final fucoidan ingredient.
It is generally recognized that a sulfate group content of at least 13% after extraction is an important quality benchmark. Fucoidan AF Premium meets this standard by maintaining a sulfate group content of 13% or higher.
Fucoxanthin is a naturally occurring carotenoid found in small amounts in brown seaweeds. In recent years, it has attracted increasing attention, and numerous scientific studies have been conducted to better understand its properties.
Because fucoxanthin is naturally oil-soluble, it is not easily mixed with water. To address this, a water-soluble form of fucoxanthin has been developed using advanced formulation technology.
Fucoidan AF Premium Liquid is formulated with this water-soluble fucoxanthin, combining high-quality fucoidan with an advanced multi-ingredient formula.
Ascophyllan is a seaweed-derived polysaccharide with a structure different from mozuku fucoidan and is gaining increasing attention worldwide.
Combined with fucoidan, it offers a more comprehensive nutritional approach.
Fucoidan AF Premium contains essential amino acids that the body cannot produce on its own, supporting daily nutrition from the inside.
The vitamins included meet Japan’s nutritional functional food standards, making this product suitable for daily supplementation.
No preservatives, artificial fragrances, or colorants are used, so you can enjoy Fucoidan AF Premium every day with confidence.
Fucoidan AF Premium Liquid is manufactured in Japan at a facility certified to the internationally recognized FSSC 22000 food safety standard.
FSSC 22000 (Food Safety System Certification 22000) is a globally recognized food safety management system designed to ensure the production of safe, high-quality food products.
From the careful selection and inspection of raw materials to manufacturing, quality control, and final shipment, every step of the production process is carried out under strict hygiene and quality management standards.
FSSC 22000 certification is awarded only to facilities that meet rigorous requirements not only for manufacturing processes, but also for sanitation management, employee training, risk management, and continuous quality improvement.
Built upon the principles of HACCP and integrated with internationally recognized management system standards, our manufacturing facility operates under a comprehensive food safety system that meets global expectations for quality and reliability.
Fucoidan AF Premium is independently analyzed by leading third-party laboratories in Japan, including the Japan Food Research Laboratories (JFRL), one of the country's most respected food testing organizations. Rather than relying solely on in-house testing, we verify the quality and composition of our products through independent laboratory analysis.
We also maintain comprehensive quality documentation, including certificates of analysis (COAs) provided by our raw material suppliers.
Independent test reports confirm that arsenic, heavy metals, and radioactive substances are either not detected or are within applicable safety standards.
Through rigorous quality control and independent testing, we are committed to providing a product that customers can choose with confidence for the whole family.
No matter how beneficial an ingredient may be, it is difficult to enjoy it every day if the taste is unpleasant.
Fucoidan AF Premium Liquid is carefully formulated to deliver a generous amount of active ingredients while minimizing the characteristic aroma of seaweed. The result is a smooth, refreshing taste with a clean finish that is easy to enjoy every day.
To create a pleasant flavor, we use natural apple juice concentrate together with erythritol, a naturally occurring sweetener found in fruits, fermented foods, and other natural sources. Through repeated taste testing and refinement, we developed a formula that offers excellent drinkability without compromising quality.
The current formula has been further improved, providing an even smoother and more enjoyable taste than our previous version.
Through collaboration with health professionals and repeated research, Fucoidan AF Premium achieves an exceptional balance of quality and formulation.
Fucoidan AF Premium is chosen by customers worldwide who value ingredient quality, safety, and balance. If you are looking for a fucoidan supplement you can trust for daily health support, Fucoidan AF Premium is a choice you can feel confident about.
→ View Fucoidan AF Premium products and options


Fucoidan Kenkodo
2-8-1 Kasugabaruhigashimachi, Kasuga-shi, Fukuoka 816-0801, Japan
TEL 0120-251-334 (9:00~21:00)
LOHAS Co., Ltd. is a "Fukuoka Prefecture Childcare Support Declaration Company." Fukuoka Prefecture No. 16 |