Pteridium aquilinum vs Calathea allouia

Side-by-side comparison of medicinal herbs

Herb

Pteridium aquilinum

Nutritive

Goeppertia allouia

Nutritive

Pteridium aquilinum

❌ Not recommended in pregnancy

❌ Not recommended while nursing

Calathea allouia

✅ Generally safe in pregnancy

✅ Generally safe while nursing

Description

Globally distributed fern; young fronds eaten in Japan and Korea; rhizome used for starch; carcinogenic with long-term use.

Caribbean tuber-bearing Marantaceae; tubers used as food and folk medicine for digestive conditions.

Active Compounds

ptaquiloside (carcinogen), thiaminase, tannins, starch

starch, minerals, vitamins, flavonoids

Traditional Uses

food source, starch extraction, rheumatism (historical)

food source, digestive conditions, convalescent food

Modern Uses

traditional food (Japan/Korea), historical starch source

nutritive food, digestive support

Adult Dosage

Young cooked fronds as food only; not for medicinal doses

Tubers as food; decoction 5-10g 2x/day

Contraindications

regular medicinal use, internal extract use, long-term consumption

known allergy

Side Effects

carcinogenicity with regular use, thiamine deficiency

mild GI upset

Drug Interactions

0 known interactions

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

Sources: WHO Monographs · NCCIH · PubMed · Commission E