You can take both, but not exactly at the same time. Cort-Eaze and Adrena-Health have somewhat opposite effects. Cort-Eaze essentially calms you while Adrena-Health gives you energy. Most people take Cort-Eaze before bed (if they have trouble sleeping) and Adrena-Health upon waking (if they have trouble getting out of bed. Also at the “mid-day slump”). However others are “wired” in the morning and feel anxious, in which case they would want to take more Cort-Eaze and NOT Adrena-Health.