Do not use comfrey to treat broken bones or other bone injuries
Do not apply comfrey to broken skin, deep wounds, or open fractures
Do not take comfrey by mouth
Avoid comfrey if you are pregnant, breastfeeding, or have liver disease
Consult a licensed healthcare professional for any suspected bone injury
Use medically approved treatment such as immobilization, imaging, and follow-up care
Seek urgent medical attention for severe pain, deformity, swelling, numbness, or inability to bear weight