Bladderwrack is a type of seaweed that is also known by its botanical name Fucus vesiculosus. This prized seaweed species is rich in trace nutrients, particularly iodine which is beneficial to thyroid health.
Bladderwrack is a popular traditional remedy used by herbalists and Naturopaths to treat hypothyroidism.
A good quality Bladderwrack supplement is generally considered safe when taken as recommended.
4 Things To Look For Before You Buy A Bladderwrack Supplement
Here’s what you need to know before purchasing a Bladderwrack supplement.
1. A microgram is very different to a milligram.
Nutrients such as iodine are usually stated in trace, or microgram amounts and you may see micrograms written as μg on a label. You don’t need a lot of iodine for it to be effective so taking large milligram doses is not a good idea unless you are doing this under strict medical supervision. For safety reasons, supplements usually supply microgram amounts, not milligram amounts which is what you see with some other nutrients.
Note: 1000 micrograms = 1 milligram.
2. A good quality supplement guarantees a consistent amount of iodine.
Your thyroid acts like a sponge for iodine so it’s important to know how much iodine you are getting. Some websites report that Bladderwrack supplements supply a variable amount of iodine. This is not always true. Good quality Bladderwrack supplements are standardised to supply a consistent amount of iodine per capsule or tablet so you know exactly how much iodine you are taking.
3. The Bladderwrack product should state the proper botanical name on the label.
The botanical name for Bladderwrack is Fucus vesiculosus. This is widely regarded as a premium kelp species. There are cheaper kelp products available. But if the product does not state the botanical name on the label you do not know exactly what you are getting.
4. A good quality Bladderwrack supplement is harvested from clean water, free of contaminants.
Bladderwrack is a sea plant that is harvested from the ocean so it should be sourced from clean waters. It’s also worth noting that a health supplement company should follow stringent quality checks at all stages of production to ensure the purity and potency of every batch.
Bone, K. A Clinical Guide to Blending Liquid Herbs: Herbal Formulations for the Individual Patient. Bladderwrack Monograph. Page 103-105. Churchill Livingstone. 2003.
Braun L, Cohen M. Herbs and natural supplements: an evidence-based guide, 3rd ed. Iodine Monograph. Page 614-622. Churchill Livingstone. 2007.
Medline Plus. Bladderwrack. Reviewed: 16 September 2020. Link