Some of the common side effects of morphine sulfate include drowsiness, dizziness, and nausea. This eMedTV resource takes an in-depth look at several side effects of this drug, including a list of serious side effects that require prompt medical care.
sedation - a state of reduced excitement or anxiety that is induced by the administrative of a sedative agent. physical condition, physiological condition, physiological state - the condition or state of the body or bodily functions.
Freebase(0.00 / 0 votes)Rate this definition: Sedative. A sedative or tranquilizer is a substance that induces sedation by reducing irritability or excitement. At higher doses it may result in slurred speech, staggering gait, poor judgment, and slow, uncertain reflexes.