1) Furthermore, donepezil hydrochloride (Aricept), a drug commonly used in patients with Alzheimer's disease, has been reported to cause high-grade A-V block as well as symptomatic sinus bradycardia, presumably due to its inhibition of acetylcholinesterase. Donepezil Hydrochloride is the hydrochloride salt of a piperidine derivative with neurocognitive-enhancing activity. Donepezil reversibly inhibits acetylcholinesterase, thereby blocking the hydrolysis of the neurotransmitter acetylcholine and, consequently, increasing its activity. About one in five black women smoke. Quitting will help you lower your risk of heart disease and improve your overall health. It isn’t easy but you CAN do it. Introduction-Donepezil hydrochloride is the reversible acetylcholinesterase enzyme inhibitor holding N-benzylpiperidine and indanone mediety in it ( Sugimoto Hachiro et Al, 2008 ). Xi'an Huisun bio-Tech Co.,Ltd,founded in Feb,2003,is specialized in manufacturing high quality and reliable raw material for all healthy industries including Vitamins nutritional supplement,pharmaceutical in worldwide. Table 3 lists adverse reactions that occurred in at least 2% of patients in pooled placebo-controlled trials who received either Donepezil hydrochloride 5 mg or 10 mg and for which the rate of occurrence was greater for patients treated with Donepezil hydrochloride than with placebo. High doses of donepezil or memantine may be the next step in achieving better results than standard pharmacologic treatments for AD. This article presents the possible benefits and indications for high doses of donepezil (23 mg/d) and memantine (28 mg/d) for managing moderate to severe AD and their safety and tolerability profiles. Donepezil, a memory enhancing agent for alzheimers is not usually associated with any frank neuropsychiatric issues which would create a drunk or high sensation. Mostly issues involve nausea , vomiting , diarrhea , faintness from pulse slowing. ARICEPT is available for oral administration in film-coated tablets containing 5, 10, or 23 mg of donepezil hydrochloride. Inactive ingredients in 5 mg and 10 mg tablets are lactose monohydrate, corn starch, microcrystalline cellulose, hydroxypropyl cellulose, and magnesium stearate. Donepezil hydrochloride 5mg Orodispersible tablets are white to off-white round, flat tablets with bevelled edges, embossed with ‘5’ on one side. Donepezil hydrochloride 10mg Orodispersible tablets are white to off-white round, flat tablets with bevelled edges, embossed with ‘10’ on one side.