Type A (augmented reaction) involves an exaggeration of the drug's therapeutic effects.

Type A (augmented reaction) involves an exaggeration of the drug's therapeutic effects.

• A. Exaggeration of therapeutic effects
• B. Idiosyncratic reaction
• C. Adrenal suppression
• D. Tardive dyskinesia

Answer: (A)

Type A reactions are exaggerated pharmacologic effects that are dose-related and predictable. Increasing the dose amplifies the drug’s therapeutic action, so the effect becomes stronger than intended. This exactly describes an exaggerated therapeutic effect. For example, higher doses of a sedative can cause excessive drowsiness, or too much of a blood pressure medication can cause an overly large drop in blood pressure. The other options describe reactions that are not dose-dependent: idiosyncratic reactions are unpredictable and not related to dose; adrenal suppression refers to a specific hormonal effect from certain drugs; tardive dyskinesia is a late-onset movement disorder from chronic exposure, not a direct, dose-related augmentation of the therapeutic effect.

Type A reactions are exaggerated pharmacologic effects that are dose-related and predictable. Increasing the dose amplifies the drug’s therapeutic action, so the effect becomes stronger than intended. This exactly describes an exaggerated therapeutic effect. For example, higher doses of a sedative can cause excessive drowsiness, or too much of a blood pressure medication can cause an overly large drop in blood pressure. The other options describe reactions that are not dose-dependent: idiosyncratic reactions are unpredictable and not related to dose; adrenal suppression refers to a specific hormonal effect from certain drugs; tardive dyskinesia is a late-onset movement disorder from chronic exposure, not a direct, dose-related augmentation of the therapeutic effect.