For patients with significant side effects to a cholinesterase inhibitor, do you try another medication in the class or avoid it altogether?

Firstly, I titrate up the medication so that if there is a side effect, I can retreat to my last tolerated dose. If the side effect is dizziness or faintness, then I will stop trying to escalate the dose. If the side effect is vivid dreaming, then one might try to take the medication in the morning....