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Special Precautions & Warnings:Pregnancy and breast-feeding: Don't take calendula by mouth if you are pregnant. It is LIKELY UNSAFE. There is a concern that it might cause a miscarriage. It's best to avoid topical use as well until more is known.
There is not enough reliable information about the safety of using calendula if you are breast-feeding. Stay on the safe side and avoid use.
Allergy to ragweed and related plants: Calendula may cause an allergic reaction in people who are sensitive to 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 calendula.
Surgery: Calendula might cause too much drowsiness if combined with medications used during and after surgery. Stop taking calendula at least 2 weeks before a scheduled surgery.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.