Question 5

Rivastigmine has the same mechanism of action as Donepezil.

Rivastigmine and Donepezil both act as acetylcholinesterase inhibitors, which are used to increase the levels of acetylcholine in the brain, thereby enhancing cognitive function in conditions like Alzheimer's disease.

A) Dorzolamide

Dorzolamide is a carbonic anhydrase inhibitor primarily used to lower intraocular pressure in conditions like glaucoma. It does not share the same mechanism of action as Rivastigmine, which targets acetylcholinesterase.

B) Doxazosin

Doxazosin is an alpha-1 adrenergic antagonist, mainly used to treat hypertension and benign prostatic hyperplasia. Its mechanism of action is unrelated to that of Rivastigmine, which focuses on neurotransmitter modulation in the brain.

C) Donepezil

Donepezil is an acetylcholinesterase inhibitor, just like Rivastigmine. Both medications work by preventing the breakdown of acetylcholine, thereby improving cholinergic transmission and cognitive function in patients with Alzheimer's disease.

D) Doxycycline

Doxycycline is a tetracycline antibiotic used to treat various bacterial infections. It does not share any mechanism of action with Rivastigmine, which is focused on enhancing cholinergic activity in the brain.

Conclusion

Rivastigmine and Donepezil both function as acetylcholinesterase inhibitors, making Donepezil the correct answer. The other options, Dorzolamide, Doxazosin, and Doxycycline, operate through entirely different mechanisms and are used for different medical conditions, thus confirming their incorrectness in relation to the question.