A.D.P.®A. D. P. supplies a patented formula of sustained release, emulsified oil of oregano. This powerful plant extract boasts robust antioxidant properties along with a strong history in supporting GI health.* The oil of oregano in A. D. P. uses micro emulsion technology for increased nutrient absorption and bioavailability, dramatically increasing the effective surface area of the oil. In addition, a sustained release mechanism has been applied to A. D.