dōTERRA On Guard is one of the most popular and versatile dōTERRA® CPTG Certified Pure Therapeutic Grade® essential oils blends. The proprietary combination of Wild Orange, Clove, Cinnamon, Eucalyptus, and Rosemary essential oils is an active component in a first line of defense for immune support.* It is a non-toxic and superb way to support the immune system.* The dōTERRA On Guard Protective Blend has been integrated into a variety of dōTERRA products to provide diverse ways to use its powerful benefits.