NPLEX II Botanical Medicine Practice Test

Which herb carries a contraindication for allergy to its plant family (Asteraceae)?

Grindelia robusta Hydrangea arborescens Hamamelis virginiana Ginkgo biloba

Correct Answer:

Grindelia robusta

Explanation:

Cross-reactivity within a plant family means someone who is allergic to one member of that family is likely to react to others in the same group. Grindelia robusta sits in the Asteraceae family, so it carries a contraindication for anyone with an allergy to Asteraceae plants. The other herbs come from different families (Hydrangeaceae, Hamamelidaceae, and Ginkgoaceae), so they don’t share this specific family-based contraindication. If a patient has an Asteraceae allergy, Grindelia should be avoided; otherwise, standard safety considerations apply.

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