No black box warning on record for N-21
As of the latest FDA labeling reviewed, N-21 (CALCIUM FLUORIDE, SILICON DIOXIDE, EUPHRASIA STRICTA, RUTA GRAVEOLENS WHOLE, GELSEMIUM SEMPERVIRENS WHOLE, PHYSOSTIGMA VENENOSUM WHOLE, ANEMONE PULSATILLA, SODIUM CHLORIDE, AND SUS SCROFA EYE) does not carry a black box warning. Standard warnings and precautions still apply — see the full N-21 medicine page for the complete safety profile.