*Pregnancy and breast-feeding: Because boneset may contain liver-damaging chemicals called pyrrolizidine alkaloids, it is considered UNSAFE. Don’t use it if you are pregnant or breast-feeding.
*Allergy to ragweed and related plants: Boneset may cause an allergic reaction in people who are sensitive to plants in the Asteraceae/Compositae family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many others. If you have allergies, be sure to check with your healthcare provider before taking boneset.
* Don’t confuse Boneset (Eupatorium perfoliatum) with teazle [[Teazle]] (Dipsacus fullonum), which is also called teasel.
==Benefits and uses of Boneset are==
Boneset contains chemicals that might work like anti-cancermedications. It also might have some mild activity against bacteria.