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Best Bladderwrack Supplements

10 Best Bladderwrack Supplements for 2020

If you’re looking for the best bladderwrack supplements to buy this year, then you’ve come to the right place

You can also get more info by jumping to our Bladderwrack Supplements Guide.

Top 10 Bladderwrack Supplements

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#1Nature's Way Bladderwrack SNature’s Way BladderwrackGet it on Amazon
#2Oregon's Wild Harvest Bladderwrack Organic SOregon’s Wild Harvest Bladderwrack OrganicGet it on Amazon
#3Solaray Bladderwrack SSolaray BladderwrackGet it on Amazon
#4Nature's Answer Bladderwrack Thallus With Organic Alcohol SNature’s Answer BladderwrackGet it on Amazon
#5Starwest Botanicals Organic Bladderwrack Powder SStarwest Botanicals Organic Bladderwrack PowderGet it on Amazon
#6Herb Pharm Bladderwrack Extract SHerb Pharm Bladderwrack ExtractGet it on Amazon
#7Swanson Bladderwrack Leaves SSwanson Bladderwrack LeavesGet it on Amazon
#8Nature's Answer Bladderwrack Thallus SNature’s Answer Bladderwrack ThallusGet it on Amazon
#9Teatox Life Bladderwrack Powder Kelp STeatox Life Bladderwrack powder KelpGet it on Amazon
#10Naturetition Supplements Ultimate Greens Max SNaturetition Supplements Ultimate Greens MaxGet it on Amazon

Bladderwrack Supplements Guide

Bladderwrack is one type of seaweed. Its scientific name is Fucus vesiculosis. The name “bladderwrack” comes from the air-filled sacs, or bladders, that help the plant float so it can collect the sunlight it needs.

The raw plant is not safe to eat, but dietary supplements can be made from extracts of the plant. Bladderwrack grows on the coasts of the United States and the Baltic coasts of Europe. The stem of bladderwrack, which is used medicinally, has air pods that allow the plant to float, which is where the plant’s name originates. Bladderwrack is sometimes called kelp, although it is not the only sea-plant that is called that.

Historically, bladderwrack has been used to decrease inflammation of tissues in the body. It has also been used as a laxative. Island and coastal dwellers historically have lower rates of hyperthyroidism due to the intake of iodine rich seafood, including bladderwrack. Bladderwrack has several common names including bladder fucus, black tang, dyers fungus, sea oak, and rock weed. This olive brown sea plant was popularized in the 19th century, when it became known for containing iodine.

Bladderwrack algin was popular in food and commonly found in ice cream, pudding, and salad dressing. It is also known for being used in personal care items, supplements, and fertilizer. Some research suggests that bladderwrack is a significant source of carotenoids and antioxidants. Fucoidan, an active substance in bladderwrack, has been known to have anti-aging properties. Fucoidan stops free-radicals from forming.

A similar-sounding supplement name is bladderwort. The two plants are not related and should not be confused for each other.

What is a Bladderwrack Supplement?

Bladderwrack as an ingredient in dietary supplement is also known as Atlantic kelp, black tang, bladder fucus, brown algae, cutweed, kelp, knotted wrack, marine oak, Norwegian seaweed, and rockweed. Even though “Atlantic kelp” is one of the plant’s common names, it is not actually related to kelp.

It comes from a variation of seaweed that is often used for thyroid disorders. Bladderwrack is botanically named Fucus vesiculosus. The entire plant is used to make the medicine. Bladderwrack is used for a variety of things, however, there is no scientific evidence to support its effectiveness.

Some of the conditions bladderwrack is used for include myxedema, goiter, obesity, constipation, arthritis, and some respiratory disorders. Bladderwrack has also been used topically on bites, burns, and wrinkles.

Bladderwrack contains iodine, which is believed by some to be effective with issues of the thyroid. Not all bladderwrack produces the same amount of iodine, making its effectiveness unclear.

Algin, another substance found in bladderwrack, is a laxative. Bladderwrack is known to be unsafe to ingest by mouth. The safety of applying it topically is uncertain. Bladderwrack can contain arsenic and other heavy metals from the water in which it is found.

Proposed Uses of Bladderwrack

These uses have not necessarily been substantiated by science.

Thyroid Function: The iodine in bladderwrack can be a regulator of the thyroid gland. Iodine also helps regulate metabolic functions. Bladderwrack may prompt the thyroid to create a hormone response.

Weight: When your metabolism goes up, it is easier to loose weight. When the body is busy burning fat, appetite is suppressed. The increase in metabolism caused by bladderwrack has led this substance to become a popular weight loss supplement.

Vision: Bladderwrack contains high levels of beta-carotene, an antioxidant. This antioxidant can neutralize free-radicals in the cornea. This slows the process of macular degeneration and cataracts.

Reducing Inflammation: As mentioned before, bladderwrack has been used as an aid for sore and inflamed joints and muscles. It has also been used to counteract gout and hemorrhoids.

Digestion: The alginic acid found within bladderwrack can ease constipation. It also adds bulk to the stool, allowing for smoother digestion. Alginic acid might reduce gas, bloat, and cramps.

Heart: Some research suggests that bladderwrack is linked to an increase in HDL cholesterol. This is the “good cholesterol” that is beneficial to the body. Bladderwrack has been associated with lowering blood pressure and reducing the risk of a heart attack or a stroke.

Anti-Aging: As previously mentioned, bladderwrack has been used for anti-aging purposes. It is believed to reduce age spots and promote skin elasticity.


One common side effect is stomach irritation, which may be accompanied by increased salivation and a “brassy” aftertaste.

Taking excessive amounts of iodine can actually cause thyroid problems, including goiter, rather than help treat or prevent them. Excessive iodine consumption has also been linked to thyroid cancer. People with allergies to iodine should not take any supplements containing bladderwrack. High iodine consumption can also worsen acne.

Those who have blood clotting disorders should avoid taking any supplements that contain bladderwrack. Supplements containing bladderwrack should also be stopped two weeks prior to any scheduled surgeries, since they can cause bleeding problems during surgery. People who’ve had certain hormone-sensitive cancers, such as breast and ovarian cancer, should consult with a health care provider before using bladderwrack supplements.

Blood sugar levels can also be affected by bladderwrack supplements. Those who are taking medications for hypoglycemia or diabetes will need to consult with a health care provider before taking bladderwrack supplements. A health care provider may suggest monitoring blood glucose levels while using the supplement.

Possible Drug Interactions

Those who take medications for thyroid-related conditions or for blood clotting should talk to their health care provider about possible drug interactions before using any supplements with bladderwrack as an ingredient. Antiplatelet and anticoagulant drugs are some of the blood-thinning medications that could possibly interact with bladderwrack supplements.

Other drugs that may interact with bladderwrack supplements may include aspirin, over the counter pain reliever drugs such as ibuprofen and naproxen, birth control pills, lithium, heparin, and warfarin (Coumadin).

Pregnancy and Breast Feeding

In addition, bladderwrack supplements have been linked to higher rates of female infertility. Women who are trying to get pregnant should not take them. People who are pregnant or breast feeding should not use bladderwrack supplements until it can be conclusively established that they are safe. Bladderwrack supplements should also be avoided by children.

Always speak with a medical professional or doctor before taking any supplements. Always read the product label for instructions and directions.

Taking Bladderwrack Supplements

Bladderwrack supplements may be taken in the form of a tablet or capsule. Health food stores may sell bladderwrack supplements in the form of powder, which can be mixed in with other ingredients to make a beverage.

What to Look for in a Good Bladderwrack Supplement

Sea vegetables including bladderwrack can also contain high levels of heavy metals, including arsenic, cadmium, and mercury. Any supplements containing bladderwrack should be tested by the manufacturer to ensure they contain safe levels of heavy metals. Heavy metal toxicity can cause abnormal bleeding, reduced platelet cell count, and kidney and liver damage.

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