Which characteristic best describes the administration of prescription medications?

The administration of prescription medications is best described by the characteristic that they are typically more potent than over-the-counter drugs. Prescription medications are specifically formulated to address particular medical conditions, often containing stronger active ingredients or combinations that necessitate healthcare provider oversight for safety and effectiveness. This increased potency usually comes with a greater potential for side effects and interactions, hence the requirement for a prescription to ensure that a qualified healthcare professional has evaluated the patient's needs and determined the appropriate treatment.

The other characteristics do not accurately reflect the nature of prescription medications. They cannot be bought without a doctor's approval, as that is a fundamental aspect of their regulation and safe use. While there can be variations in cost depending on the medication and various factors, prescription medications are not universally cheaper than psychotropic medications; pricing can vary widely regardless of the category. Finally, monitoring is an important part of the administration of prescription medications, as ongoing oversight is often needed to assess the efficacy and safety of the treatment regimen.