Kelp Nutritive vs Porphyra umbilicalis

Side-by-side comparison of medicinal herbs

Herb

Kelp Nutritive

Laminaria digitata

Nutritive

Nutritive

Kelp Nutritive

❌ Not recommended in pregnancy

❌ Not recommended while nursing

Porphyra umbilicalis

✅ Generally safe in pregnancy

✅ Generally safe while nursing

Description

North Atlantic seaweed rich in iodine and trace minerals.

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

Active Compounds

Iodine, Fucoidan, Alginate, Potassium, Iron

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

Traditional Uses

Thyroid support, Goiter prevention

nutritive, thyroid, constipation, vitamin B12 source for vegetarians

Modern Uses

Iodine source, Thyroid support, Mineral supplement

nutritive, anti-inflammatory, antioxidant, thyroid support

Adult Dosage

500-1000mg dried kelp daily

3-10g dried nori sheets daily

Contraindications

Hyperthyroidism, Thyroid medications

iodine sensitivity, hyperthyroidism

Side Effects

Iodine excess, Thyroid dysfunction

generally very safe as food

Drug Interactions

0 known interactions

Reviewed by: HerbAlly Editorial Team, Medical herbalists and healthcare professionals

Sources: WHO Monographs · NCCIH · PubMed · Commission E