When not to use calendula?
People allergic to plants in the Asteraceae family (ragweed, chamomile, echinacea) should avoid it. Pregnant or breastfeeding women are generally advised not to take calendula internally, as it may stimulate menstruation. Calendula may also interact with sedatives, diabetes medications, or blood pressure drugs. Calendula generally has few pest problems, but may have problems with aphids, powdery mildew and occasionally cucumber mosaic virus. Plants may languish in prolonged hot summer weather but typically recover when cooler weather returns.Neither calendula cream nor calendula taken internally has been associated with any adverse effects other than occasional allergic reactions, and animal studies have found no significant toxic effects However, the same studies found that calendula acts like a sedative in high doses and reduces blood pressure.Calendula plants have been known to cause allergic reactions in people who are sensitive to ragweed, chrysanthemum, and other members of the Asteraceae/Compositae family. It should not be ingested during pregnancy.
Who should not use calendula?
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. Take extra care if you are allergic to pollens or plants like ragweed, daisy, aster, marigolds, or chrysanthemums. Take extra care if you are taking drugs that decrease your immune system. These are drugs like azathioprine, cyclosporine, dexamethasone, methotrexate, and sirolimus.