Diclofenaco para el dolor y la inflamación
Dicloflex, Diclomax, Voltarol
Revisado por pares por Dr Colin Tidy, MRCGPÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 1 May 2024
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Diclofenac is a medicine called a non-steroidal anti-inflammatory drug. It is also known as 'an NSAID'.
Before you take diclofenac, let your doctor know if you have ever had a bad reaction to any other anti-inflammatory painkiller.
The most common side effects of diclofenac are stomach pain, indigestion, and feeling sick (nausea).
Diclofenac is not suitable for people with heart disease, circulation problems, or a history of heart attack or stroke.
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About diclofenac
Tipo de medicamento | |
Usado para | Pain and inflammation |
También llamado | Voltarol®; Dicloflex®; Diclomax®; Diclo-SR®; Econac®; Motifene®; |
Disponible como | Tablets, gastro-resistant tablets, prolonged-release tablets and capsules, suppositories, mouthwash |
What is diclofenac used for?
Volver al contenidoDiclofenac is a type of analgésico antiinflamatorio called non-steroidal anti-inflammatory drugs (NSAIDs), or just 'anti-inflammatories'.
It is used to treat painful conditions such as artritis, esguinces y distensiones, gota, migraña, dental pain, and pain after surgical operations. It eases pain and reduces inflammation.
Types of diclofenac
There are two forms of diclofenac - diclofenac sodium and diclofenac potassium. The main difference between the two is that diclofenac potassium is absorbed into the body more quickly than diclofenac sodium.
A quick action is useful where immediate pain relief is required, and a prolonged action is more useful in reducing inflammation.
Diclofenac is also formulated as skin gels and patches and as eye drops.
Some brands of diclofenac also contain a medicine called misoprostol. Misoprostol helps to protect the stomach against irritation which can be caused by taking diclofenac over a period of time.
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How does diclofenac work?
Volver al contenidoDiclofenac works by blocking the effect of chemicals in your body, called cyclo-oxygenase (COX) enzymes. These enzymes help to make other chemicals in the body, called prostaglandins.
Prostaglandins are produced at sites of injury or damage, and cause pain and inflammation. By blocking the effect of COX enzymes, fewer prostaglandins are produced, which means pain and inflammation are eased.
Side effects of diclofenac
Volver al contenidoCommon side effects of diclofenac are:
Indigestión.
Heartburn (acid reflux).
Dolor estomacal.
Náuseas.
Diarrea.
Encontrará una lista completa en el prospecto del fabricante que se suministra con su medicamento.
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How to manage diclofenac side effects
Volver al contenidoLos efectos no deseados a menudo mejoran a medida que su cuerpo se adapta al nuevo medicamento, pero hable con su médico o farmacéutico si alguno de los siguientes persiste o se vuelve problemático.
Common diclofenac side effects | ¿Qué puedo hacer si experimento esto? |
Indigestion or heartburn (acid reflux), stomach pain | Try taking your dose after a meal if you are not already doing so. If the discomfort continues, speak with your doctor |
Sentirse mal (náuseas) | Mantente con comidas simples - evita alimentos ricos o picantes |
Diarrea | Bebe mucha agua para reponer los líquidos perdidos |
Importante: if you experience any of the following less common but more serious symptoms, stop taking this medicine and contact your doctor for advice straightaway:
Si tienes alguna dificultad para respirar, como sibilancias o falta de aliento.
Si tienes algún signo de una reacción alérgica, como hinchazón alrededor de la boca o la cara, o una erupción cutánea severamente pruriginosa.
If you pass blood or black stools, bring up (vomit) blood, or have severe tummy (abdominal) pains.
Importante: Studies have shown that taking diclofenac at higher doses and for long periods of time can increase your risk of having a ataque al corazón o accidente cerebrovascular. Seek urgent medical attention if you experience any signs of this, including: chest pain, shortness of breath, weakness or slurred speech.
If you experience any other symptoms which you think may be due to diclofenac, speak with your doctor or pharmacist for further advice.
Who should not take diclofenac?
Volver al contenidoSome medicines aren’t suitable for everyone. Before taking diclofenac, it’s important your doctor knows:
Si tienes asma u otro trastorno alérgico.
If you have ever had a stomach or duodenal ulcer, or if you have an inflammatory bowel disorder such as Crohn's disease or colitis ulcerosa.
Si tienes una afección cardíaca, o un problema con tus vasos sanguíneos o circulación.
Si estás embarazada o amamantando.
If you have any risk factors for heart disease, including presión arterial alta (hipertensión), high cholesterol levels, diabetes or smoking.
If you have any blood clotting problems.
If you have a connective tissue disorder, such as a condition called systemic lupus erythematosus (SLE).
If you have problems with the way your liver works, or problems with the way your kidneys work.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
Si alguna vez ha tenido una reacción alérgica a cualquier otro AINE (como aspirina, naproxeno, indometacina, y ibuprofeno), o a cualquier otro medicamento.
How to take diclofenac
Volver al contenidoBefore taking diclofenac, read the leaflet inside the pack for important information and possible side effects.
Take diclofenac exactly as prescribed by your doctor or pharmacist. Follow the dose and timing on the label.
Taking diclofenac with food or milk can help reduce stomach upset.
Diclofenac comes in different forms. Follow the instructions for your specific type. Some tablets should be mixed with water, while others must be swallowed whole.
If you miss a dose, take it when you remember unless it’s nearly time for the next dose. Do not take two doses at once.
If using diclofenac mouthwash, rinse or gargle 15 ml two to three times a day. Use it for up to 7 days after dental treatment or 6 weeks after radiotherapy.
Obteniendo el máximo de tu tratamiento
Volver al contenidoYour doctor will prescribe the lowest effective dose for the shortest time to reduce side effects. If you need diclofenac long term, you may be given another medicine to help protect your stomach.
Keep any regular doctor appointments so your progress can be checked, especially with long-term use.
If you have asthma and develop wheezing or breathing problems, stop taking diclofenac and see your doctor straight away.
Check with a pharmacist before taking other medicines. Do not take diclofenac with other anti-inflammatory painkillers, including some cold and flu remedies.
If you’re having surgery or dental treatment, tell them you are taking diclofenac.
How to store diclofenac
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 sitio web de la Tarjeta Amarilla.
Preguntas frecuentes
Volver al contenidoHow long does it take for diclofenac to work?
Diclofenac usually starts to work within 30 minutes to 1 hour of taking a dose. Pain and inflammation may continue to improve over the next few hours or days, depending on the condition being treated.
Can you drink alcohol while taking diclofenac?
You should avoid or limit alcohol while taking diclofenac. Alcohol can increase the risk of stomach irritation, ulcers, and bleeding, and make other side effects worse.
Is it safe to take diclofenac during pregnancy?
Diclofenac is not recommended during pregnancy, especially after 20 weeks, as it may harm the unborn baby. Only take it during pregnancy if a doctor specifically advises it.
Can you buy diclofenac over-the-counter?
Yes. In the UK, low-dose diclofenac tablets (12.5 mg) and diclofenac gel are available from pharmacies without a prescription. Higher doses however require a prescription from a doctor.
Is diclofenac stronger than ibuprofen?
Yes, diclofenac is often considered stronger than ibuprofen for reducing inflammation and pain, but it may also have a higher risk of side effects, especially with long-term use.

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Lecturas adicionales y referencias
- Manufacturer's PIL, Diclofenac sodium 25 mg and 50 mg gastro-resistant tablets; Dexcel Pharma Ltd, The electronic Medicines Compendium. Dated September 2022.
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Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Next review due: 3 Mar 2027
1 May 2024 | Última versión

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