Dangers of Kelp Pills

After my ED doctor found out that I was taking kelp pills, she sent me this email.

According to Ford Clinical Toxicology:

Acute ingestion of iodine (I2 )-containing solutions results in gastrointestinal irritation, gastrointestinal ulceration, and chemical pneumonitis. These effects are concentration dependent, so that ingestion of tincture of iodine or Lugol's iodine solution results in far more tissue injury than does ingestion of povidone-iodine. Any acute exposure to significant amounts of iodide may lead to acute tubular necrosis, hemolytic anemia, and hyperthyroidism. Early toxic symptoms are related to stimulation of increased secretions, leading to rhinorrhea, conjunctivitis, and cough productive of serous fluid. Acute respiratory distress, severe lactic acidosis, renal dysfunction, cardiogenic shock, and death occur within hours. Anaphylactic and anaphylactoid reactions also occur. Chronic ingestion of iodine leads to thyroid disorders in some individuals. Large or chronic exposure to iodides results in sensitivity reactions manifest as painful salivary gland enlargement and a variety of dermal eruptions, so-called ioderma.

Icelandic Sea Kelp Pills
Each tablet contains:
Calcium (from Calcium Carbonate)......66 mg
Iodine (from Kelp Laminaria digitata)...225 mcg
Kelp (Laminaria digitata).....................41 mg

Other Ingredients:
Alfalfa leaves (Medicago sativa)
Vegetarian Stearic Acid
Silicon Dioxide
Vegetarian Magnesium Stearate
Micro-cellulose coating

According to cecil textbook of medicine:

Large doses (>2 mg/d in adults) may induce hypothyroidism by blocking thyroid hormone synthesis. Supplementation with >100 mug/day to an individual who was formerly deficient occasionally induces hyperthyroidism.

A few journal articles:

Eliason BC.
Transient hyperthyroidism in a patient taking dietary supplements containing kelp.
J Am Board Fam Pract. 1998 Nov-Dec;11(6):478-80. No abstract available.

Pye KG, Kelsey SM, House IM, Newland AC.
Severe dyserythropoiesis and autoimmune thrombocytopenia associated with ingestion of kelp supplements.
Lancet. 1992 Jun 20;339(8808):1540. No abstract available.

Shilo S, Hirsch, HJ
Iodine-induced hyperthyroidism in a patient with a normal thyroid gland.
Postgrad Med J. 1986 Jul;62(729):661-2.

Walkiw O, Douglas DE.
Health food supplements prepared from kelp--a source of elevated urinary arsenic.
Clin Toxicol. 1975;8(3):325-31. No abstract available.

If your spanish is any good:

Salas Coronas J, Cruz Caparros G, Laynez Bretones F, Diez Garcia F.
[Hyperthyroidism secondary to kelp tablets ingestias]
Med Clin (Barc). 2002 Jun 1;118(20):797-8.

If your german is better:

enzen C, Buess M, Brander L.
[Iodine-induced hyperthyroidism (iodine-induced Basedow's disease): a current disease picture]
Schweiz Med Wochenschr. 1999 May 1;129(17):658-64. German.

Perhaps dutch then:

[Hyperthyroidism during administration of kelp tablets]
Ned Tijdschr Geneeskd. 1990 Jul 14;134(28):1373. Dutch. No abstract available.