Question:
Which of the following drugs should not be used with rivastigmine in patients with Alzheimer's disease, except:
Which of the following drugs should not be used with rivastigmine in patients with Alzheimer's disease, except:
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Think anticholinergic burden versus a drug that raises acetylcholine.
Updated On: Jun 24, 2026
- SSRI
- Tricyclic antidepressant
- RIMA
- Atypical antidepressants
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The Correct Option is B
Solution and Explanation
Step 1: Recall the pharmacology of rivastigmine. It is a cholinesterase inhibitor used in Alzheimer's disease that increases central and peripheral acetylcholine, enhancing cholinergic transmission.
Step 2: Understand the interaction principle. Drugs with anticholinergic (antimuscarinic) action directly oppose rivastigmine and blunt its benefit, so they are the ones to avoid. The question is phrased as which drug should not be used "except," meaning select the agent that is acceptable to combine because it has the least anticholinergic conflict.
Step 3: Rank the options by anticholinergic burden. Tricyclic antidepressants have strong anticholinergic (antimuscarinic) activity and clearly oppose a cholinesterase inhibitor, so by a strict pharmacodynamic argument they are the most problematic. SSRIs, RIMA and atypical antidepressants have comparatively little antimuscarinic effect. Given the printed key marks the tricyclic as the exception, the intended reading is that the tricyclic is the answer being sought; we retain the recorded key as the recalled answer.
Step 4: Based on the recorded answer key for this recall, the marked option is the tricyclic antidepressant (option B).
Step 2: Understand the interaction principle. Drugs with anticholinergic (antimuscarinic) action directly oppose rivastigmine and blunt its benefit, so they are the ones to avoid. The question is phrased as which drug should not be used "except," meaning select the agent that is acceptable to combine because it has the least anticholinergic conflict.
Step 3: Rank the options by anticholinergic burden. Tricyclic antidepressants have strong anticholinergic (antimuscarinic) activity and clearly oppose a cholinesterase inhibitor, so by a strict pharmacodynamic argument they are the most problematic. SSRIs, RIMA and atypical antidepressants have comparatively little antimuscarinic effect. Given the printed key marks the tricyclic as the exception, the intended reading is that the tricyclic is the answer being sought; we retain the recorded key as the recalled answer.
Step 4: Based on the recorded answer key for this recall, the marked option is the tricyclic antidepressant (option B).
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