PRECAUTIONS: Before using haloperidol, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.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 severe nervous system problem (severe CNS depression), Parkinson's disease.This medication should not be given to a patient who is unconscious.Before using this medication, tell your doctor or pharmacist your medical history, especially of: bipolar disorder, difficulty urinating (e.g., due to prostate problems), glaucoma, overactive thyroid (hyperthyroidism), seizures, low white blood cell count.Haloperidol may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that require immediate medical attention. The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may affect the heart rhythm (see also Drug Interactions section). Before using haloperidol, tell your doctor or pharmacist if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using haloperidol safely.This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Before having surgery, be sure to tell your doctor or dentist that you are using haloperidol.This medication can reduce sweating, making you more likely to get heatstroke. Avoid hard work and exercise in hot weather.Caution is advised when using this drug in elderly people because they may be more sensitive to the effects of the drug, especially drowsiness, difficulty urinating, and the effects on the heart.This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.This drug passes into breast milk and could have undesirable effects on a nursing infant. Therefore, breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
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