No black box warning on record for N-4
As of the latest FDA labeling reviewed, N-4 (CHELIDONIUM MAJUS, BRYONIA ALBA ROOT, STRYCHNOS NUX-VOMICA SEED, LYCOPODIUM CLAVATUM WHOLE, MAMMAL LIVER, SODIUM SULFATE, AND MILK THISTLE) does not carry a black box warning. Standard warnings and precautions still apply — see the full N-4 medicine page for the complete safety profile.