Haldol (Haloperidol Injection) Patient Information: Side Effects and Drug Images at RxList

Haldol Tablet


Hypotension , Orthostatic hypotension. Generic forms of haloperidol are marketed by many different manufacturers. Haldol Loxitane Fanapt Versacloz. Tissue culture experiments indicate that approximately one-third of human breast cancers are prolactin dependent in vitro , a factor of potential importance if the prescription of these drugs is contemplated in a patient with a previously detected breast cancer.

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Safety and efficacy not established years kg: Clinical studies of haloperidol did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. This restriction typically limits the quantity of the drug that will be covered. The chemical designation is 4-[4- p-chlorophenyl hydroxypiperidino]-4'-fluorobutyrophenone and it has the following structural formula:. Symptoms, Types, Causes, Treatment What is schizophrenia? There are reports, however, of cases of limb malformations observed following maternal use of Haldol along with other drugs which have suspected teratogenic potential during the first trimester of pregnancy.

Early symptoms include mood swings, apathy, depression, and anger uncharacteristic of the individual. Judgement, memory, and other cognitive functions may become impaired. Presymptomatic testing is available for individuals who have a family history of Huntington's disease. Treatment includes medication and therapy for symptoms. Mental illness is caused by heredity, biology, psychological trauma and environmental stressors. Symptoms in women include: The most common symptom in men is impotence erectile dysfunction.

Treatments for prolactinomas include medication and surgery. Different types of psychotic disorders include schizophrenia, schizoaffective disorder, schizophreniform disorder, brief psychotic disorder, shared psychotic disorder, delusional disorder, substance-induced psychotic disorder, paraphrenia, and psychotic disorders due to medical conditions. Symptoms and signs include carditis, polyarthritis, Aschoff bodies, rash, Sydenham's chorea, and fever. Treatment for rheumatic fever involves eliminating the bacteria with penicillin, erythromycin, or azithromycin.

Further treatment focuses on alleviating the symptoms brought on by the body's immunologic response to the bacteria. Schizoaffective disorder is a mental illness that features schizophrenia and a mood disorder, either major depression or bipolar disorder. Symptoms include agitation, suicidal thoughts, little need for sleep, delusions, hallucinations, and poor motivation.

Treatment may involve psychotherapy, medication, skills training, or hospitalization. Schizophrenia is a disabling brain disorder that may cause hallucinations and delusions and affect a person's ability to communicate and pay attention.

Symptoms of psychosis appear in men in their late teens and early 20s and in women in their mids to early 30s. With treatment involving the use of antipsychotic medications and psychosocial treatment, schizophrenia patients can lead rewarding and meaningful lives.

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Treatment is merely symptomatic and involves intensive care with stabilization of vital functions. In early detected cases of oral overdose, induction of emesis , gastric lavage , and the use of activated charcoal can all be tried.

Epinephrine is avoided for treatment of hypotension and shock, because its action might be reversed. In the case of a severe overdose, antidotes such as bromocriptine or ropinirole may be used to treat the extrapyramidal effects caused by haloperidol, acting as dopamine receptor agonists.

In general, the prognosis of overdose is good, and lasting damage is not known, provided the person has survived the initial phase. An overdose of haloperidol can be fatal. Haloperidol is a typical butyrophenone type antipsychotic that exhibits high affinity dopamine D 2 receptor antagonism and slow receptor dissociation kinetics. Given that antagonism of D 2 receptors is more beneficial on the positive symptoms of schizophrenia and antagonism of 5-HT 2 receptors on the negative symptoms, this characteristic underlies haloperidol's greater effect on delusions, hallucinations and other manifestations of psychosis.

Haloperidol acts on these receptors: The drug is well and rapidly absorbed with a high bioavailability when injected intramuscularly. The T max is 20 minutes in healthy individuals and The plasma concentrations of haloperidol decanoate reach a peak at about six days after the injection, falling thereafter, with an approximate half-life of three weeks.

The apparent volume of distribution is between 9. If haloperidol is given as a slow IV infusion, the onset of action is slowed, and the duration of action is prolonged. Plasma levels of four to 25 micrograms per liter are required for therapeutic action. The determination of plasma levels can be used to calculate dose adjustments and to check compliance, particularly in long-term patients.

Plasma levels in excess of the therapeutic range may lead to a higher incidence of side effects or even pose the risk of haloperidol intoxication.

The concentration of haloperidol in brain tissue is about fold higher compared to blood levels. It is slowly eliminated from brain tissue, [51] which may explain the slow disappearance of side effects when the medication is stopped.

Haloperidol is heavily protein bound in human plasma, with a free fraction of only 7. The greatest proportion of the hepatic clearance is by glucuronidation, followed by reduction and CYP-mediated oxidation, primarily by CYP3A4. Haloperidol was discovered by Paul Janssen. Haloperidol was approved by the U. Haloperidol is also used on many different kinds of animals.

It appears to be particularly successful when given to birds, e. From Wikipedia, the free encyclopedia. C Risk not ruled out. S4 Prescription only CA: Aspen Pharma Pty Ltd. Archived from the original on 14 March Retrieved 29 May Archived from the original on Retrieved 2 January The New England Journal of Medicine. Archived from the original on 8 April The evolution of drug discovery: Archived PDF from the original on 13 December Retrieved 8 December Health care needs assessment: Seminars in general adult psychiatry 2.

Clinical handbook of schizophrenia Pbk. James; Underwood, Ned A. Controlled trials to establish the safety and effectiveness of intramuscular administration in children have not been conducted. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

An oral form should supplant the injectable as soon as practicable. In the absence of bioavailability studies establishing bioequivalence between these two dosage forms the following guidelines for dosage are suggested. For an initial approximation of the total daily dose required, the parenteral dose administered in the preceding 24 hours may be used. Since this dose is only an initial estimate, it is recommended that careful monitoring of clinical signs and symptoms, including clinical efficacy, sedation, and adverse effects, be carried out periodically for the first several days following the initiation of switchover.

In this way, dosage adjustments, either upward or downward, can be quickly accomplished. Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug, and may not reflect the rates observed in practice. The data described below reflect exposure to haloperidol in the following:. Musculoskeletal and Connective Tissue Disorders: Torticollis , Trismus , Muscle rigidity, Muscle twitching.

Loss of libido , Restlessness. Reproductive System and Breast Disorders: Acneiform skin reactions Vascular Disorders: Hypotension , Orthostatic hypotension. The following adverse reactions relating to the active moiety haloperidol have been identified during postapproval use of haloperidol or haloperidol decanoate.

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Blood and Lymphatic System Disorders: Pancytopenia , Agranulocytosis ,. Thrombocytopenia, Leukopenia, Neutropenia Cardiac Disorders: Ventricular fibrillation , Torsade de pointes, Ventricular tachycardia , Extrasystoles. Inappropriate antidiuretic hormone secretion Gastrointestinal Disorders: Sudden death, Face edema, Edema, Hyperthermia , Hypothermia.

Anaphylactic reaction, Hypersensitivity Investigations: Hypoglycemia Musculoskeletal and Connective Tissue Disorders: Rhabdomyolysis Nervous System Disorders: Convulsion , Headache, Opisthotonus, Tardive dystonia.

Pregnancy, Puerperium and Perinatal Conditions: Drug withdrawal syndrome neonatal. Respiratory, Thoracic and Mediastinal Disorders: Laryngeal edema, Bronchospasm, Laryngospasm, Dyspnea. Skin and Subcutaneous Tissue Disorders: Dermatitis exfoliative, Hypersensitivity vasculitis , Photosensitivity reaction, Urticaria , Pruritis, Rash, Hyperhidrosis.

Drug-drug interactions can be pharmacodynamic combined pharmacologic effects or pharmacokinetic alteration of plasma levels. The risks of using haloperidol in combination with other drugs have been evaluated as described below. Since QT-prolongation has been observed during HALDOL treatment, caution is advised when prescribing to a patient with QT-prolongation conditions long QT-syndrome, hypokalemia , electrolyte imbalance or to patients receiving medications known to prolong the QT-interval or known to cause electrolyte imbalance.

If concomitant antiparkinson medication is required, it may have to be continued after HALDOL is discontinued because of the difference in excretion rates. If both are discontinued simultaneously, extrapyramidal symptoms may occur. The physician should keep in mind the possible increase in intraocular pressure when anticholinergic drugs, including antiparkinson agents, are administered concomitantly with HALDOL.

Ketoconazole is a potent inhibitor of CYP3A4. It may be necessary to reduce the haloperidol dosage. Haloperidol is metabolized by several routes, including the glucuronidation and the cytochrome P enzyme system. Inhibition of these routes of metabolism by another drug may result in increased haloperidol concentrations and potentially increase the risk of certain adverse events, including QT-prolongation. In pharmacokinetic studies, mild to moderately increased haloperidol concentrations have been reported when haloperidol was given concomitantly with drugs characterized as substrates or inhibitors of CYP3A4 or CYP2D6 isoenzymes, such as itraconazole, nefazodone, buspirone, venlafaxine , alprazolam , fluvoxamine, quinidine, fluoxetine , sertraline , chlorpromazine, and promethazine.

When prolonged treatment weeks with enzyme-inducing drugs such as rifampin or carbamazepine is added to HALDOL therapy, this results in a significant reduction of haloperidol plasma levels. In 5 other schizophrenic patients treated with haloperidol and rifampin, discontinuation of rifampin produced a mean 3. In a study in 11 schizophrenic patients co-administered haloperidol and increasing doses of carbamazepine, haloperidol plasma concentrations decreased linearly with increasing carbamazepine concentrations.

Thus, careful monitoring of clinical status is warranted when enzyme inducing drugs such as rifampin or carbamazepine are administered or discontinued in haloperidol-treated patients.

Iamges: haldol


An overdose of haloperidol can be fatal. Individual plans may vary and formulary information changes.


Dermatitis exfoliative, Hypersensitivity vasculitis , Photosensitivity reaction, Urticaria , Pruritis, Rash, Hyperhidrosis. Inhibition of these routes of metabolism by another drug may result in increased haloperidol concentrations and potentially increase the risk of certain adverse events, including QT-prolongation. Haldol haloperidol is an antipsychotic medication that affects chemicals in the brain.


Biliary hence anavart trichq kino feces and haldol urine [1] [2]. Haldol may haldol the chance of staying in hospital, but, at present it is not possible to be confident about the difference between people haldol haloperidol and people taking placebo. The decanoate haldol of haloperidol haloperidol decanoate, trade names Haldol decanoate, Halomonth, Neoperidole has a much longer duration of action, so is often used in people known to be noncompliant with oral medication. Another important adverse effect that occurs haldol is orthostatic hypotension a lowering of your blood pressure when you haldol sitting up or standing up. However, although a relatively greater number of rats survived to the end of the study haldol high-dose male and female groups, these animals did not have a greater incidence of tumors than control animals. Many people using this medication do not have serious side effects. Journal of Psychiatric Practice.