Medicinal Herbs and ADHD


Scientific Name: Fucus vesiculosus


  • Polysaccharides (mucilage & mucopolysaccharides)
  • Algal polyphenols (fucoidans & polyphloroglucinols
  • Trace minerals (iodine up to 0.1%)

Medicinal actions:

  • Anti-inflammatory
  • Anti-hypothyroid
  • Anti-rheumatic
  • Connective tissue tonic
  • Nutritive
  • Vulnerary

Mechanism of Action & Pharmacology:

  • High iodine content may promote Thyroid hormone (T3 & T4) production.
  • Fucoidan may modulate fibroblast proliferation.
  • Algal polyphenols (Fucoidans and polyphloroglucinols) have anti-inflammatory activity.
  • Fucoidans have been shown to have a range of anti-inflammatory effects, inhibit cell growth, induce apoptosis and suppress angiogenesis in thyroid cancer cells.


  • Dried Herb
  • Tincture
  • Fresh kelp as food
  • Topically as lotion, liniment or poultice

Safety & Toxicity Concerns:

  • May produce stomach upset and changes in urination, bleeding time, blood pressure, and menstruation.
  • Iodine hypersensitivity reaction may include rash, angioedema, fever, arthralgia.
  • Contraindicated above culinary amounts in pregnancy & lactation, and excessive thyroid activity (hyperthyroidism).
  • Avoid in known allergy to seaweeds.


  • Avoid with hyperthyroid medication (e.g. carbimazole) as may decrease effectiveness of drug due to natural iodine content.
  • May have additive effects with thyroid replacement therapies (e.g. thyroxine).
  • Use caution with anticoagulants & anti-diabetic agents due to antiplatelet activity (theoretical).
  • Potential risk for reduced bioavailability of amidarone, estrogens, and may increase effects of laxatives.

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