Pregnancy and Essential Oil Safety:

Consult a professional before using any essential oil while pregnant. Pregnant women should avoid some oils completely

Internal Use:

Use essential oils internally only with professional guidance. Not all essential oils are safe for internal use. Internal use of unadulterated oils may be dangerous.

Buy Quality Essential Oils:

Don't buy perfume or fragrance oils if you want the benefits of essential oils. Also,  carefully select where you purchase your essential oils. The quality of essential oils varies widely from company to company, and some companies try to pass off adulterated oils as genuine.