Haloperidol long-acting injection
Haldol Decanoate
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSLast updated 20 Jul 2022
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Your doctor or nurse will inject haloperidol into a muscle in your buttocks. The effect of each injection will last for four weeks.
It is important you keep your regular appointments with your doctor or nurse.
There are a number of side-effects which you may experience from this treatment. If you are concerned about any of these, you should discuss them with your doctor.
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Video picks for Medicamentos para el sistema nervioso
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About haloperidol long-acting injection
Tipo de medicamento | Antipsychotic injection |
Usado para | Easing the symptoms of schizophrenia and other similar mental health problems |
También llamado | Haloperidol decanoate; Haldol Decanoate® |
Disponible como | Inyección |
Esquizofrenia is a serious mental health condition that causes disordered ideas, beliefs and experiences. Haloperidol is used to relieve the symptoms of schizophrenia and other similar mental health problems. Such symptoms can include hearing, seeing, or sensing things that are not real, having mistaken beliefs, and feeling unusually suspicious.
Haloperidol works on the balance of chemical substances which act on the nervous system in your brain.
Long-acting, or 'depot', injections are used to maintain your recovery once your symptoms have been eased by taking tablets or capsules. The injection slowly releases haloperidol into your body and is given every four weeks. The main advantage of a depot injection is that you do not have to remember to take tablets every day.
Before having haloperidol long-acting injections
Volver al contenidoSome medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start having haloperidol injections it is important that your doctor or pharmacist knows:
Si estás embarazada, intentando tener un bebé o amamantando.
If you have a heart condition or blood vessel problems.
Si tienes problemas de hígado, riñón o próstata.
If you have a breathing problems.
If you have any of the following: epilepsy, enfermedad de Parkinson, depresión, increased pressure in your eyes (glaucoma) or a condition causing muscle weakness, called miastenia gravis.
If you have ever had yellowing of your skin or the whites of your eyes (ictericia) o un trastorno sanguíneo.
If you have a tumour on your adrenal gland (phaeochromocytoma).
If you have been told you have low levels of salts (electrolytes) in your blood.
If you have ever had an allergic reaction to any medicine.
Si está tomando o usando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
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How to use haloperidol long-acting injection
Volver al contenidoBefore you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about haloperidol and a full list of side-effects which you may experience from having it.
Haloperidol long-acting injection will be given to you by your doctor or nurse. It is given by injection into a muscle in your buttocks.
If you haven't received an injection like haloperidol before, a small dose is usually given as a test before you have a normal dose. This is to see how well you tolerate the injection.
You may be asked to continue taking your current tablets or capsules for a short while after you have had your first injection. This is because it can take a few weeks before you feel the full effect from the injection.
If you miss an appointment for an injection, you should contact your doctor's surgery to make another appointment as soon as possible. This is because the injection should be given to you without further delay.
Treatment with haloperidol injection may need to continue for several months or even years. Your dose will be reduced gradually to make sure your symptoms don't return.
Obteniendo el máximo de tu tratamiento
Volver al contenidoYour treatment will require careful monitoring to make sure that you get the best possible benefit from haloperidol. Keep your regular doctor's appointments so your progress can be checked. You will need to have some tests from time to time.
If you are having any dental treatment or an operation, tell the person carrying out the treatment which medicines you are taking. This is important because haloperidol may interfere with any anaesthetic you receive.
If you buy or take any 'over-the-counter' medicines, check with a pharmacist that they are suitable for you to take with haloperidol.
If you drink alcohol, ask your doctor for advice about drinking while you are on haloperidol. Alcohol may increase the chance that you experience side-effects and may not be recommended for you.
Smoking may affect the amount of haloperidol in your body. Let your doctor know if you start or stop smoking while you are having haloperidol.
Haloperidol may cause your skin to become more sensitive to sunlight than normal. Use a sunscreen that protects against UVA light and has a sun protection factor (SPF) of at least 15, especially in strong sunlight or until you know how your skin reacts. Do not use sunbeds.
If you have diabetes you may need to check your blood glucose more frequently, as haloperidol may affect the levels of sugar in your blood. Your doctor will be able to advise you about this.
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Can haloperidol long-acting injection cause problems?
Volver al contenidoJunto con sus efectos útiles, la mayoría de los medicamentos pueden causar efectos secundarios no deseados, aunque no todos los experimentan. Estos generalmente mejoran a medida que su cuerpo se adapta al nuevo medicamento, pero hable con su médico o farmacéutico si alguno de los siguientes efectos secundarios persiste o se vuelve problemático.
Common haloperidol side-effects | ¿Qué puedo hacer si experimento esto? |
Pain and redness at the site of the injection | This should quickly pass. If the area becomes swollen or 'lumpy', let your doctor or nurse know |
Feeling dizzy or sleepy, blurred vision | Si esto ocurre, no conduzca y no utilice herramientas o máquinas. No consuma alcohol |
Boca seca | Intenta masticar chicle sin azúcar o chupar caramelos sin azúcar |
Stomach upset | Mantente en comidas simples - evita alimentos ricos o picantes |
Estreñimiento | Drink plenty of water and eat a well-balanced diet |
Dolor de cabeza | Ask your pharmacist to recommend a suitable painkiller. If the headaches continue, speak with your doctor |
Feeling shaky or restless, unusual or uncontrollable muscle movements, increased saliva | Hable con su médico lo antes posible sobre cualquiera de estos. Es posible que su tratamiento necesite ajustes |
Changes in your weight, difficulty sleeping, mood changes, stuffy nose, changes in sexual ability, breast enlargement, production of breast milk, menstrual problems, fast heartbeat, difficulty passing urine, skin rash | Consulte a su médico si alguno de estos le causa molestias |
Importante: if you experience any 'flu-like' symptoms including any muscle stiffness, a very high temperature, feeling confused or sweaty, and a fast heartbeat, you must contact your doctor immediately. These may be signs of a rare but serious condition known as neuroleptic malignant syndrome.
Si experimenta otros síntomas que cree que pueden deberse a este medicamento, hable con su médico o farmacéutico.
How to store haloperidol long-acting injection
Volver al contenidoMantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Información importante sobre todos los medicamentos
Volver al contenidoInformación importante sobre todos los medicamentos
Nunca tome más de la dosis prescrita. Si sospecha que usted u otra persona podría haber tomado una sobredosis de este medicamento, acuda al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Yellow Card website.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Lecturas adicionales y referencias
- Manufacturer's PIL, Haldol® Decanoate 50 mg/ ml and 100 mg/ml solution for injection; Janssen-Cilag Ltd, The electronic Medicines Compendium. Dated April 2020.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Siguiente revisión programada: 18 de enero de 2027
20 Jul 2022 | Última versión

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