Free NZ wide shipping with total purchase over $80 NZD

Traditional Uses of Bladderwrack Seaweed

Bladderwrack seaweed has been a herbal remedy and a food source in various cultures for centuries. Historically, the Romans used Bladderwrack to soothe joint pains and in more recent times, it’s been used to treat tuberculosis.  It has long been recognised for its nourishing, anti-inflammatory, laxative & diuretic effects on the body. It’s iodine content is substantial (although less than in kelp).

Bladderwrack is a brown seaweed rich in iodine, calcium, magnesium, potassium, sodium, sulfur, silicon & iron and high in some B-complex vitamins. It contains moderate amounts of phosphorus, selenium, manganese & zinc and small amounts of vitamins A, C, E and G. It contains anti-sterility vitamin S as well as vitamin K. It is rich in algin and mannitol, carotene and zeaxantin with traces of bromine. It contains both soluble & insoluble fibres and some protein.

Its early use as an anti-goiter medication (high content of the essential mineral iodine) enjoyed a high success rate. The main impact using bladderwrack has is to increase in the thyroid gland’s production of hormones (by raising the metabolic rate and functioning of the gland).
It’s been proposed the seaweed seems to ‘modulate’ the thyroid, meaning that an impaired thyroid responds best to the treatment, while the same protocol may not promote the same metabolic increases in healthy glands – thus naturally reducing the risks of an overdose.

Bladderwrack has also long been recognised as an anti-inflammatory agent, where it is said to soothe the irritated tissues of the body. It has been used to treat various rheumatic conditions, gout, hemorrhoids & skin irritation where it can successfully neutralise the irritation, reduce swelling and relieve pain. Bladderwrack-based remedies seem to be effective whether the herb is taken internally or as an external application for inflamed joints.According to research, the anti-inflammatory properties stem from fucoxanthin, a carotenoid present in most brown seaweeds.

Other health benefits from using Bladderwrack seaweed include:

  • it’s diuretic and cleanses the kidneys
  • eases skin  problems & hair loss
  • stimulates the immune system and adrenal glands

Bladderwrack seaweed is used most commonly as an herbal supplement, which can be consumed directly , mixed into food, as an infusion and applied externally in a concoction (as facial scrubs or poultice) to improve its efficacy.

New research is showing a wider application for bladderwrack: it has been studied for its anti-viral, anti-coagulant properties and its beneficial effects in the treatment of obesity, certain types of cancer and signs of aging.


Disclaimer: This material is provided for educational purposes only and IS NOT intended as a substitute for professional medical advice, diagnosis, or treatment. This information is generic and should be verified by a qualified health practitioner for specific & individual needs & requirements.

International Shipping

We ship to most countries


Our seaweed is sustainably harvested


Processed in approved food grade facilities

100% Secure Checkout

PayPal / MasterCard / Visa