Which of the following drugs cannot reduce the salivary secretions ?
Correct answer: D. Neostigmine
- A. Amitriptyline
- B. Disopyrmide
- C. Atenolol
- D. Neostigmine
Explanation
Neostigmine inhibits acetylcholinesterase, increasing acetylcholine at muscarinic sites and therefore increasing salivary secretion rather than reducing it. Amitriptyline and disopyramide have antimuscarinic effects that cause dry mouth.
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