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Fucus vesiculosis

Fucus vesiculosis                                   Common name: Bladderwrack, Kelp

Family: Fucaceae

Part used: Whole plant

Constituents: Phenolic compounds (algin, mucopolysaccharides); trace minerals (iodine up to 0.1%)

Actions: Source of iodine (anti-hypothyroid), nutritive, and anti-rheumatic


Medical uses: Hypothyroid (due to iodine deficiency), goiter, obesity, rheumatism (externally)

Pharmacology: iodine content promotes T3 & T4 production


  • Tincture: (1:5, 45%),  2-6 mL TID
  • Dried Herb: 0.8-2g QD
  • Fresh kelp as food

Contraindications: Pregnancy, lactation, GI bleeding, excess thyroid activity

Toxicity: None known.


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