Comfrey salve is skin regenerative and aids in healing cuts, bruises, and minor skin irritation. WARNING: External Use Only. Consuming this product can cause serious liver damage. This product contains comfrey. Comfrey contains pyrrolizidine alkaloids, which may cause serious illness or death. This product should not be taken orally, used as a suppository, or applied to broken skin. For further information contact the Food and Drug Administration: http//vm.cfsan.fda.gov