All of the following drugs cause dryness of mouth except_______________?

Correct answer: D. Neostigmine

  • A. Atropine
  • B. Chlorpheniramine
  • C. Imipramine
  • D. Neostigmine

Explanation

Atropine, chlorpheniramine and imipramine reduce salivation through antimuscarinic effects and therefore cause dry mouth. Neostigmine inhibits acetylcholinesterase, increasing cholinergic activity and salivary secretion instead.

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