No black box warning on record for Polygonum
As of the latest FDA labeling reviewed, Polygonum (POLYGONUM AVICULARE, ACORUS CALAMUS, RHUS TOXICODENDRON, GNAPHALIUM POLYCEPHALUM, RHODODENDRON CHRYSANTHUM, COLOCYNTHIS, COLCHICUM AUTUMNALE, KALI IODATUM, ICHTHYOLUM, SYMPHYTUM OFFICINALE) does not carry a black box warning. Standard warnings and precautions still apply — see the full Polygonum medicine page for the complete safety profile.