KROK 1 2015 – Question 104 · KROK (Medicine) · Pharmacology
A patient was prescribed loratadine to treat allergic cheilitis. What is the mechanism of action of this drug?
- A. Suppresses activity of choline esterase
- B. Suppresses activity of Na+/K+-ATPase
- C. Blockade of adrenergic receptors
- D. Increases activity of monoamine oxidase
- E. Blockade of H1-histamine receptors
Hint
Allergic swelling and itching are driven by a mediator released from mast cells; think about how a second-generation antiallergic drug would interfere with its action.
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