Greater celandine (Chelidonium majus)

Tier 4 — risky / avoid · Liver toxicity · Hepatitis

A European herb once used for digestive complaints that turned out to be dangerous. Multiple case reports of serious liver damage including hepatitis and acute liver failure have been documented. Banned or restricted in several countries including Germany. No proven therapeutic benefit justifies the serious liver damage risk it carries.

Dose: AVOID — multiple reports of severe hepatotoxicity; no demonstrated benefit