Aricept is a brand-name prescription drug. The FDA has approved it to treat dementia due to mild, moderate, or severe Alzheimer’s disease in adults. . Jul 14, · What is Aricept? Intravenous atropine sulfate titrated to effect is. Tertiary anticholinergics such as atropine may be used as an antidote for ARICEPT overdosage. Aricept is used to treat mild, moderate and severe Alzheimer's disease, also called dementia of the Alzheimer's type. Aricept contains the active ingredient donepezil hydrochloride. Aricept is an acetylcholinesterase inhibitor. They are thought to work by increasing the level of a chemical called acetylcholine in the brain. Stop using Aricept and call your doctor at once if you have: severe or ongoing vomiting; a light-headed feeling, like you might pass out; slow heartbeats; seizure. Aricept side effects. Get emergency medical help if you have signs of an allergic reaction to Aricept: hives; difficult breathing; swelling of your face, lips, tongue, or throat. People with dementia usually have lower levels of this chemical, which is important for the processes of memory, thinking, and reasoning. Aricept improves the function of nerve cells in the brain. It works by preventing the breakdown of a chemical called acetylcholine (ah SEET il KOE leen). The 5 mg orally disintegrating tablets are white. The strength, in mg . Dec 01, · ARICEPT ODT is supplied as round tablets containing either 5 mg or 10 mg of donepezil hydrochloride. The main effect of this overdose was bradycardia, which responded to atropine therapy. A tenfold dosing error caused donepezil toxicity.