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Dulse

Palmaria palmata

Sea Moss & Algae. Western & European and Modern nutrition.

Also called Dillisk, Dulce, Red seaweed

Spanish: Dulse

Iodine and metals vary

A soft, reddish seaweed from cold North Atlantic coasts, eaten dried as a snack or in soups.

Did you know? When fried in a pan, dulse turns crisp and salty, with a smoky taste that many people compare to bacon.

What it may help, and how strong the proof is

  • Anemia & blood building. Contains some iron, but plant iron is poorly absorbed. Not a reliable treatment for anemia.
    Traditional proof
  • Inflammation. Lab studies on seaweed pigments show anti-inflammatory activity. Human evidence is lacking.
    Traditional proof

Parts of the body

Blood, Immune system, Joints

Traditional use

Ireland, Iceland, Scotland and Atlantic Canada have eaten dulse as food for centuries. It was also used in folk remedies for general health.

How it is classified

Herbal actions
Nutritive, Antioxidant. Energy: neutral.

How people take it

Eaten dried, in salads, soups or fried as a snack. Supplements are less common.

Food and powder.

Where to get it

Grows on rocks in cold North Atlantic and North Pacific waters. Sold dried, flaked, powdered and as snack chips.

Be careful

Iodine and metal content vary widely, so people with thyroid disease should be careful. Seaweed allergy is possible.

Avoid if: thyroid disease; seaweed allergy.

Mixing with other things

  • Use caution
    Thyroid medicine (levothyroxine (Synthroid))

    Iodine content varies, which can change thyroid medicine effects.

Adds up with others that carry iodine: , , , , , .

The honest take

Dulse is a nutritious seaweed, but it has few human studies. Its iron is poorly absorbed, and its iodine level varies from batch to batch. Claims that it treats anemia or detoxes the body are not supported.