H antagonists are effective in the therapy of all the following except______________?
Correct answer: D. Parkinsonism
- A. Common cold
- B. Systemic anaphylaxis
- C. Motion sickness
- D. Parkinsonism
Explanation
H1 antihistamines are useful in colds, as an adjunct in anaphylaxis, and for motion sickness because of their antihistaminic and often sedative effects. Parkinsonism is generally treated with dopaminergic or antimuscarinic drugs, not as a routine indication for H1 blockers.
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