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NPLEX II Botanical Medicine Practice Test

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Which herb has essential oils including linalool and linalyl acetate and is used for anxiety and insomnia?
Correct Answer:
Lavandula angustifolia
Explanation:
Lavender’s calming, sleep-promoting effects come from its essential oils, especially linalool and linalyl acetate. Lavandula angustifolia is the lavender species most associated with these compounds, and they’re linked to anxiolytic (anti-anxiety) and sedative actions often used for anxiety and insomnia. The other herbs listed don’t share this oil profile or primary use for anxiety or sleep—one is more about nervous tension or gynecologic effects, another is toxic and not used for this purpose, and another is mainly a lung-support remedy. So lavender fits best because of its characteristic essential oil components and the traditional use for anxiety and insomnia.

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