Seaweeds Dulse vs Porphyra umbilicalis

Red seaweed harvested from North Atlantic coasts used in Celtic food medicine of Ireland, Iceland, and Nova Scotia as mineral-rich nutritive.

Red seaweed used in Japanese sushi nori; traditional Welsh laverbread; rich in B vitamins including B12.

iodine, fucoidan, phycoerythrin, carrageenan, R-phycoerythrin

phycoerythrin, phycocyanin, vitamin B12, iron, zinc, porphyran, taurine

Nutritive and mineral medicine in Irish and Icelandic folk medicine, Thyroid support via iodine, Dental health and oral conditions, Worm treatment in Celtic tradition

nutritive, thyroid, constipation, vitamin B12 source for vegetarians

Thyroid support iodine, Antioxidant, Antiviral fucoidan, Mineral supplement

nutritive, anti-inflammatory, antioxidant, thyroid support

5-10g dried dulse as food daily; 1-3g supplement capsules

3-10g dried nori sheets daily

Thyroid conditions (iodine content), Anticoagulants

iodine sensitivity, hyperthyroidism

Iodine excess with very high doses, Metallic taste with high iodine

generally very safe as food