The phrase "narcotic effects" refers to the strong and often addictive properties of certain substances that can cause drowsiness, pain relief, and a feeling of euphoria when used. Full definition
As a young woman under narcotic effects of forced sedation, you must figure out how to sneak past the wardens of this cruel institution. (software.intel.com)
Trees release antimicrobial essential oils that can produce slightly narcotic effects, and sometimes even act as a mild antidepressant. (inc.com)
In fact, some of the chemicals used in perfumes have been found to have a mild narcotic effect. (functionalhealthnews.com)