What is a common indication that tranquilizers have been effective?

Tranquilizers, also known as anxiolytics or sedatives, are primarily prescribed to help manage anxiety and stress-related disorders. Their primary mechanism of action typically involves altering the levels of neurotransmitters in the brain, particularly gamma-aminobutyric acid (GABA), which helps calm neuronal activity.

When tranquilizers are effective, one of the most noticeable outcomes is a reduction in feelings of anxiety and stress. Patients often report feeling more relaxed and able to cope with situations that previously caused them discomfort or panic. This calming effect is a direct result of the pharmacological actions of these medications, reflecting their intended use in treating anxiety disorders.

Other options such as improved cognitive function, enhanced physical strength, or increased appetite are not typical indications of tranquilizer effectiveness. In fact, tranquilizers may sometimes cause cognitive dulling or reduced physical coordination, and while they can affect appetite, it isn't a primary indicator of their effectiveness. Therefore, the most appropriate indication of a tranquilizer's effectiveness is indeed the reduction of anxiety and stress.