Swanson Maximum Strength Fucoidan Extract Immune Support Supplement for Adults Seeking Natural Immune Defense from Brown Seaweed - 500 mg (60 Vegan Capsules)

This is a decent product. I have tried a few products and this and Dr B___ are purer forms — without bad side effects. I found that with other purer products that the potency was not quite strong enough for maximum results. This product is 500mg at 40% extract potency. This computes to 200mg of the extract. The human tests are with pure extracts around 600mg. For me, I started with one capsule (200mg of actual extract) to check for side effects and purity. I am now at two capsules. I can definitely say it has positively affected my pain level and inflammation. I would recommend. Update 1/25/26. After testing other brands in an effort to find a purer product with less excipients at an resonable price, Swanson is still the winner. My goal was 600mg of Fucoidan extract. With Swanson (40%x500mg=200mg Fucoidan/capsule x 3caps=600mg extract = 1-1/2bottles $30). Dr Best (70%x300mg=210mg Fucoidan extract/capsule x 3caps=630mg extract = 1-11/2bottles $45) Pristine's Fucoidan = questionable white powder, no effect, should be dark tan for 85%claim, BestVite = 500mg x 85% but very pale colored and questionable extract % but no excipients. Bottom line, Swanson still wins our hard earned dollars for honesty and pricing.

Great Seller, fast shipping !! Will Buy Again~

A bit pricey, but works well

Swanson Maximum Strength Fucoidan Extract is a powerful herbal supplement that has significantly boosted my immune system. Each veggie capsule delivers a potent 500mg of fucoidan extract, sourced from natural ingredients known for their immune-supporting properties. Since I started taking this supplement, I’ve noticed a remarkable improvement in my overall health and resilience against common illnesses. The natural formula is gentle on the stomach and free from unnecessary additives, making it a clean and effective choice for daily use. Swanson has consistently delivered high-quality products, and this fucoidan extract is no exception. The 60 veggie capsules provide a two-month supply, offering excellent value and convenience for maintaining a strong immune system. In summary, Swanson Maximum Strength Fucoidan Extract is an outstanding supplement that supports immune function and overall health. Its potency, purity, and effectiveness make it a must-have in my wellness routine.

You do not have to buy Fucoidan from Japan for $400/bottle. Fucoidan Sea Weed now could be planted in USA with price of $20/bottle and with same or better strength. Amazing news and product!

I took the supplement but did not notice any results. Not gonna continue using.

Love it

Fucoidan content in the various seaweeds that contain it can vary simply based on when the seaweed is harvested. So I appreciate having an isolated source of it. Everyone is different, so I make no promises, but I find that taking fucoidan in water each morning helps me slowly become more lean with more visible muscles. I'm probably getting some of the benefit of all the seaweed soups that Koreans/Japanese often eat.