What Should I Tell My Healthcare Provider?You should talk with your healthcare provider prior to taking this medication if you have:
- Parkinson's disease
- Heart problems
- Seizures or epilepsy
- An overactive thyroid (hyperthyroidism)
- Bipolar disorder
- An enlarged prostate (also known as benign prostatic hyperplasia or BPH)
- Difficulty passing urine
- Any allergies, including allergies to food, dyes, or preservatives.
Also let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see Haldol and Pregnancy)
- Breastfeeding (see Haldol and Breastfeeding)
- Drink alcohol regularly (see Alcohol and Haldol).
You should also make sure to tell your healthcare provider about all of the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Precautions and Warnings With Haloperidol for more information on this topic, including information on who should not take the drug.)
How Does It Work?Haloperidol belongs to a group of medications called "typical" or (first-generation) antipsychotic medications. It is not entirely known precisely how haloperidol works. However, it is known that it blocks or lessens the effects of dopamine, a chemical in the brain. Dopamine may be elevated in people with schizophrenia or other psychotic or behavior disorders.
Haloperidol is not a cure for schizophrenia or other psychotic or behavior disorders. It only helps to control symptoms (see Symptoms of Schizophrenia, Tourette Syndrome Symptoms, or ADHD Symptoms).