Psychiatry In Alzheimer disease patients, the major effect on neurotransmitter systems of tacrine, donepezil, rivastigmine, and galantamine is to A increase dopamine availability B decrease dopamine availability C increase Ach availability D decrease Ach availability 💡 Explanation In Alzheimer disease patients, the major effect on neurotransmitter systems of tacrine, donepezil, rivastigmine, and galantamine is to ✓ Correct Answer: C. increase Ach availability