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PRECAUTIONS: Before taking trospium, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain type of glaucoma (uncontrolled narrow-angle type), inability to urinate (urinary retention), delayed or slow emptying of your stomach.Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, constipation, other stomach conditions (such as ulcerative colitis, intestinal atony), myasthenia gravis.This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit alcoholic beverages.This medication can reduce sweating, making you more likely to develop a serious condition called heat stroke. Avoid strenuous work or exercise in hot weather.Caution is advised when using this drug in the elderly because they may be more sensitive to its effects, especially dry mouth, constipation, and difficulty urinating.During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: other drugs that are also removed by the kidneys (such as metformin, morphine, procainamide, tenofovir, vancomycin), certain anti-Parkinson's drugs (such as benztropine, trihexyphenidyl), other antimuscarinic drugs (such as dicyclomine, oxybutynin, scopolamine, tolterodine), potassium tablets/capsules, pramlintide.Tell your doctor or pharmacist if you are taking other products that cause drowsiness, including alcohol, certain antihistamines (such as cetirizine, diphenhydramine), anti-seizure drugs (such as carbamazepine), drugs for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants, and narcotic pain relievers (such as codeine).Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.