Which group of essential oils can stimulate uterine contractions during pregnancy?

• A. Arnica, basil, clary sage, cypress, juniper, myrrh, and thyme
• B. Peppermint, lemon, bergamot
• C. Lavender, ylang-ylang, geranium
• D. Eucalyptus, pine, sandalwood

Answer: (A)

Emmenagogue effects are the key idea here—essential oils that can increase uterine activity and potentially trigger contractions. Clary sage is widely recognized as a uterine stimulant and is often cited in lists of emmenagogue oils. Basil and thyme are also described as strong emmenagogues. When these are present together, the group is the one most associated with promoting uterine contractions. Myrrh and cypress can be noted for effects that influence uterine activity in some references, and juniper may contribute to stimulation as well. In contrast, the other groups include oils that are not typically linked with stimulating contractions, or are chosen for calming, lifting mood, or other actions rather than inducing labor. Because the question targets oils that can stimulate uterine contractions during pregnancy, the first group best fits that concept. In pregnancy, such oils are generally avoided or used only under professional guidance due to the risk of triggering contractions.