Alzheimers Home > Aricept Side Effects
Some patients may experience certain side effects while taking Aricept. Side effects that were most commonly reported in trials include dizziness, insomnia, and generalized pain. Less common problems that are reported in less than 2 percent of people include hot flashes, bloating, sore throat, and gastrointestinal bleeding. If you develop any serious side effects of Aricept, such as severe nausea or vomiting, be sure to contact your healthcare provider immediately.
As with any medicine, there are possible side effects with Aricept® (donepezil hydrochloride). However, not everyone who takes Aricept will have side effects. In fact, most people tolerate the medication well. When side effects do occur, they are generally minor and either require no treatment or can easily be treated by you or your healthcare provider.
In previous research studies, up to 5 percent of people taking Aricept 5 mg, up to 13 percent of people taking Aricept 10 mg daily, and up to 18.6 percent of people taking Aricept 23 mg once daily stopped their medicine because of side effects. Nausea, vomiting, and diarrhea were the most common reasons why people stopped taking Aricept. Side effects tend to be less severe if the dose is slowly increased over a period of several weeks.
(The side effects discussed below are not a complete list of side effects reported with Aricept. Your healthcare provider can discuss a more complete list of possible Aricept side effects with you.)