No black box warning on record for Herx
As of the latest FDA labeling reviewed, Herx (ECHINACEA (ANGUSTIFOLIA), ARNICA MONTANA, HYDRASTIS CANADENSIS, LEDUM PALUSTRE, MAGNESIA SULPHURICA, KALMIA LATIFOLIA, ARSENICUM ALBUM, COCCULUS INDICUS, PHOSPHORUS) does not carry a black box warning. Standard warnings and precautions still apply — see the full Herx medicine page for the complete safety profile.