Keep your medicine in a safe place to protect it from theft. By improving muscle control and reducing stiffness, this medicine allows more normal movements of the body as the disease symptoms are reduced. See your eye doctor if the problem does not go away or is severe.You may sweat less than usual while you are taking this medicine. Do not stand or sit up quickly, especially if you are an older patient. Some items may interact with your medicine.Visit your doctor or health care professional for regular checks on your progress.You may get drowsy or dizzy. Find medication information including related drug classes, side effects, patient statistics and answers to frequently asked questions. We do not endorse non-Cleveland Clinic products or services. Other drugs may interact with benztropine, including prescription and over-the-counter medicines, vitamins, and herbal products. Throw away any unused medicine after the expiration date on the label.NOTE: This sheet is a summary. We do not endorse non-Cleveland Clinic products or services. Your doctor will tell you how much medicine to take. Benztropine is also used to treat and prevent these symptoms when they are caused by drugs such as chlorpromazine ( Thorazine ), fluphenazine ( Prolixin ), perphenazine (Trilafon), and others. It acts on the nervous system and corrects some of the chemical imbalances that cause the symptoms of Parkinson's disease.Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. We do not endorse non-Cleveland Clinic products or services. Other drugs may interact with benztropine, including prescription and over-the-counter medicines, vitamins, and herbal products. Common side effects include dry mouth, blurry vision, nausea, and constipation. Call for Additional Assistance Disclaimer: The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. If it is almost time for your next dose, take only that dose. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. BENZTROPINE (BENZ troe peen) is for certain movement problems due to Parkinson's disease, certain medicines, or other causes.This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.They need to know if you have any of these conditions:This medicine is for injection into a muscle or a vein. Stopping this medicine too quickly may cause serious side effects or your condition may worsen.A special MedGuide will be given to you by the pharmacist with each prescription and refill. Do not use sun lamps or tanning beds/booths.Side effects that you should report to your doctor or health care professional as soon as possible:Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):This list may not describe all possible side effects. It may also be used to reduce the shakiness and restlessness that can be caused by some tranquilizers. Avoid alcoholic drinks.If you are taking another medicine that also causes drowsiness, you may have more side effects. Talk to your doctor if you notice a reduction in your ability to sweat. Take your medicine at regular intervals. ... thioridazine. Benztropine may make you sweat less, making you more likely to get heat stroke. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Do not share this medicine with others.If you miss a dose, take it as soon as you can. This medication belongs to the class of medications called antiparkinsonians. Benztropine is used together with other medicines to treat the symptoms of Parkinson's disease (muscle spasms, stiffness, tremors, poor muscle control).