Diamorfina para el alivio del dolor
Revisado por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 19 Ene 2023
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Diamorphine is prescribed to treat severe pain.
It will usually be given to you by a doctor or nurse as an injection. A nasal spray may sometimes be used for children in hospital.
The most common side-effects are constipation, drowsiness and feeling sick (nausea). Your doctor may prescribe medicines for you to take with diamorphine to help with some of these unwanted effects.
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About diamorphine
Tipo de medicamento | Analgésico opiáceo fuerte |
Utilizado para | Severe pain |
También llamado | Diacetylmorphine (in US) |
Disponible como | Injection, tablets and nasal spray |
Strong opioids (sometimes called opiates) are medicines used to treat severe pain. Diamorphine is a type of strong opioid. It is used in particular to treat pain after a surgical operation and pain caused by cancer. It may also be used following a heart attack, or for breathlessness caused by fluid in the lungs. It works on your nervous system and brain to reduce the amount of pain you feel.
Diamorphine is usually given as an injection. Tablets of diamorphine are available but rarely prescribed. This is because other strong opioids (such as morphine) are preferred as they are absorbed better by your body when taken by mouth.
A nasal spray is available to treat severe pain in children. It is only given by a doctor or nurse in an emergency in hospital. A nasal spray is used because it is quicker to set up and less distressing for the child than an injection.
Before having diamorphine
Some 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 it is important that your doctor knows:
Si está embarazada, esperando un bebé o en período de lactancia.
If you have heart, liver, or kidney problems.
Si tiene problemas de próstata o dificultades para orinar.
Si tiene algún problema respiratorio, como asma o enfermedad pulmonar obstructiva crónica (EPOC).
Si le han dicho que tiene la tensión baja (hipotensión).
Si tiene problemas de tiroides o glándulas suprarrenales.
Si padece epilepsia.
Si tiene un problema en el conducto biliar.
If you have severe diarrhoea, or have been constipated for more than a week, or have an inflammatory bowel problem.
Si padece una enfermedad que causa debilidad muscular, llamada miastenia gravis.
Si ha sufrido recientemente un traumatismo craneoencefálico grave.
Si alguna vez ha tenido un problema de salud mental llamado psicosis.
Si alguna vez ha sido dependiente de las drogas o el alcohol.
Si alguna vez ha tenido una reacción alérgica a un medicamento.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que pueda adquirirse sin receta, así como medicamentos a base de plantas y complementarios.
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How diamorphine is given
Diamorphine is given as an injection into a muscle or into your bloodstream. Your nurse or doctor will usually administer it for you. You may be given a repeat injection every four hours in order to control your pain.
Diamorphine can also be given as an injection under the surface of your skin. Often this is done using a device known as a 'syringe driver' and a needle that stays attached to your skin. A syringe driver allows you to give yourself a dose of diamorphine without a nurse needing to inject it for you. This means that you can control your own pain relief by having a dose as soon as you feel it is needed. A syringe driver will only allow a certain number of doses to be given over a 24-hour period.
If your child is in hospital and in severe pain, the doctor may decide to use a diamorphine nasal spray. The spray gives effective pain relief and is often suitable for emergency situations. The number of sprays used will depend on the weight of your child.
Aproveche al máximo su tratamiento
Ask to read the manufacturer's printed information leaflet for the product you (or your child) have been given - this will give you more information about diamorphine and a full list of the side-effects which you may experience from having it.
Ask your doctor for advice before drinking alcohol. Your doctor may recommend you do not drink alcohol while you are on diamorphine because it increases the chance of side-effects such as feeling dizzy and sleepy.
If you are a driver, please be aware that diamorphine is likely to affect your reactions and ability to drive. It is an offence to drive while your reactions are impaired. Even if your driving ability is not impaired, should you drive, you are advised to carry with you some evidence that the medicine has been prescribed for you - a repeat prescription form or a patient information leaflet from the pack is generally considered suitable.
If you are planning a trip abroad and need to take a supply with you, you are advised to carry a letter from your doctor to explain that you have been prescribed diamorphine. This is because diamorphine is classed as a 'controlled drug' and is subject to certain restrictions.
If you take or buy any 'over-the-counter' medicines, check with a pharmacist that they are suitable for you to take with diamorphine. Many other medicines have similar side-effects to diamorphine and taking them together will increase the risk of unwanted effects.
Before having any other medical treatment, tell the person carrying out the treatment that you are having diamorphine as a painkiller.
You will not be prescribed diamorphine for longer than necessary. This is because having diamorphine regularly for a long time can lead to your body becoming dependent on it, which might cause you to feel restless and irritable when it is then stopped. If you are concerned about this, discuss it with your doctor or pharmacist.
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Can diamorphine cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with diamorphine. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Común diamorphine side-effects | ¿Qué puedo hacer si me ocurre esto? |
Feeling dizzy, sleepy or drowsy, blurred vision | No conduzca ni utilice herramientas o máquinas. No beba alcohol |
Sentirse mal (náuseas) o estar enfermo (vómitos) | Stick to simple meals - avoid rich or spicy foods. Your doctor may prescribe a medicine to ease the sickness |
Estreñimiento | Siga una dieta equilibrada y beba mucha agua al día. Si el problema persiste, hable con su médico. |
Boca seca | Take frequent sips of water. Try chewing sugar-free gum or sucking sugar-free sweets |
Other side-effects of diamorphine include: sweating, feeling confused, difficulties passing urine, flushing, the sensation of having a 'thumping heart' (palpitations), mood changes, reduced appetite, rash, and itching | Si alguno de ellos le resulta molesto, hable con su médico |
Si experimenta cualquier otro síntoma que considere que puede deberse a este medicamento, consulte a su médico o farmacéutico.
If you are caring for someone who has recently been given a dose of diamorphine and you notice the following side-effects, alert a doctor or nurse as soon as possible:
Very small, 'pinpoint' pupils (the black circle of the eye).
Shallow breathing or difficulty breathing.
Losing consciousness (falling asleep).
Having a fit (seizures or convulsions).
How to store diamorphine
Mantenga todos los medicamentos fuera del alcance y de 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
Información importante sobre todos los medicamentos
No tome nunca más de la dosis prescrita. Si sospecha que usted u otra persona ha tomado una sobredosis de este medicamento, acuda al servicio de urgencias de su hospital. Llévese el envase, aunque esté vacío.
Este medicamento es para usted. Nunca se lo dé a otras personas aunque su enfermedad parezca ser la misma que la suya.
No guarde medicamentos caducados o que no desee. Llévelos a su farmacia local, que se encargará de eliminarlos por usted.
Si tiene cualquier duda sobre este medicamento pregunte a su farmacéutico.
Informar de los efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede notificarlos en línea a través del sitio web de la Tarjeta Amarilla.
Lecturas complementarias y referencias
- Manufacturer's PIL, Diamorphine Hydrochloride BP for Injection 5 mg, 10 mg, 30 mg, 100 mg, 250 mg and 500 mg; Wockhardt UK Ltd, The electronic Medicines Compendium. Dated April 2020.
- Medicamentos BNF completa 89ª edición; Asociación Médica Británica y Real Sociedad Farmacéutica de Gran Bretaña, Londres.
Historia del artículo
La información de esta página ha sido redactada y revisada por médicos cualificados.
Fecha de la próxima revisión: 18 de enero de 2026
19 Ene 2023 | Última versión

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