Patients who have a proven hypersensitivity to galantamine hydrobromide powder or any of the excipients used in the formulation do not take RAZADYNE ER or RAZADYNE. You can read more from this official site. PHARMACOLOGY IN CLINICAL PRACTICE Action Mechanisms Although the cause of cognitive dysfunction in Alzheimer’s disease (AD) is unknown, it has been documented that acetylcholine-producing neurons in ...