Galantamine - Definition, Purpose, Description, Recommended dosage, Precautions, Side effects, InteractionsGalantamine belongs to a class of drugs called acetylcholinesterase inhibitors. In the United States galantamine is sold under brand name Reminyl.Alzheimer's disease develops when brain cells, called neurons, undergo an early, and selective death. It is believed that the premature death of these neurons may be prevented if stimulated by a brain chemical called acetylcholine. Acetylcholine is recycled by an enzyme called acetylcholinesterase. Galantamine works by inhibiting this enzyme. The inhibition of acetylcholinesterase increases the concentration of available acetylcholine.