Desloratadina
Neoclarityn
Revisado por pares por Dr Colin Tidy, MRCGPÚltima actualización por Michael Stewart, MRPharmSLast updated 19 Jun 2023
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Desloratadine is called a non-drowsy antihistamine; however, it can still cause drowsiness in a few people.
Make sure your reactions are normal before you drive and before you use tools or machines.
Take one dose a day.
The most common side effect of desloratadine is tiredness (fatigue).
At a glance
Desloratadine is a non-drowsy antihistamine that treats symptoms of hay fever and hives.
It works by blocking histamine that the body releases during an allergic reaction.
Common side effects include feeling tired, dry mouth, and headache.
You can take desloratadine with or without food, once a day.
Tell your doctor if you are pregnant, have kidney problems, or have epilepsy.
Desloratadine usually starts working within 1 hour and lasts about 24 hours.
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Resumen
Tipo de medicamento | A non-drowsy antihistamine |
Usado para | Hay fever (allergic rhinitis); hives (urticaria) |
También llamado | Neoclarityn® |
Disponible como | Tabletas y medicina líquida oral |
What is desloratadine used for?
Volver al contenidoDesloratadine is a non-drowsy antihistamine used to relieve symptoms caused by allergies.
It is commonly used to treat hay fever (allergic rhinitis), which can cause sneezing, a runny or blocked nose, and itchy or watery eyes.
It is also used to treat hives (urticaria), helping to reduce itching and skin rashes.
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How does desloratadine work?
Volver al contenidoDesloratadine works by blocking the effects of histamine that is released by the body after exposure to allergens such as pollen, animal fur or house dust mites.
Histamine is responsible for many allergy symptoms, including sneezing, a runny or blocked nose, and itchy or watery eyes.
By preventing histamine from binding to its receptors, desloratadine helps reduce these symptoms and provides relief from allergic conditions such as hay fever and hives.
Side effects of desloratadine
Volver al contenidoCommon side effects of desloratadine are:
Sintiéndose cansado o somnoliento.
Boca seca.
Dolor de cabeza.
You will find a full list in the manufacturer's information leaflet supplied with your medicine.
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How to manage desloratadine side effects
Volver al contenidoThe unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any continue or become troublesome.
Desloratadine side effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Feeling tired or sleepy | 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 |
Dolor de cabeza | Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza continúan, informa a tu médico |
If you experience any other symptoms that you think may be due to the medicine, speak with your doctor or pharmacist.
Who should not take desloratadine?
Volver al contenidoDesloratadine may not be suitable for everyone. It is important that your doctor knows:
Si estás embarazada, intentando concebir o amamantando.
Si tienes problemas con el funcionamiento de tus riñones.
If you have epilepsy or there is a family history of fits (seizures).
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.
Si alguna vez ha tenido una reacción alérgica a otro antihistamínico, o a cualquier otro medicamento.
How to take desloratadine
Volver al contenidoRead the manufacturer's printed information leaflet from inside your pack. It will give you more information about desloratadine and a full list of side-effects which you may experience from taking it.
Recommended doses of desloratadine are:
For adults and for children aged over 12 years: 5 mg taken once a day.
For children aged 6-12 years: 2.5 mg taken once a day. This is 5 ml of the liquid medicine.
For children aged 1-6 years: 1.25 mg taken once a day. This is 2.5 ml of the liquid medicine.
If you are giving desloratadine liquid medicine to a child, make sure you follow the dosing instructions on the bottle carefully so that you measure out the correct dose.
You can take desloratadine before or after meals. Some people find it helps to swallow the tablets with a drink of water.
Si olvida tomar una dosis, tómela tan pronto como lo recuerde. Si no lo recuerda hasta el día siguiente, omita la dosis olvidada. No tome dos dosis juntas para compensar una dosis olvidada.
Obteniendo el máximo de tu tratamiento
Volver al contenidoMost people only need to take an antihistamine for a short while when they have symptoms. You should stop taking desloratadine once your symptoms have eased.
Although desloratadine is classed as a non-drowsy antihistamine, it can still cause drowsiness in a few people. If this happens to you, do not drive and do not use tools or machines.
If you drink alcohol while you are on desloratadine, be aware of its effects on you and do not drink more than moderate amounts. Alcohol can increase the risk of side-effects from antihistamines.
If you are having an operation, or any treatment or tests (particularly if it is to test for an allergy), make sure you say that you are taking an antihistamine.
If you buy any medicines, check with a pharmacist that they are suitable to take with an antihistamine. This is because a number of other medicines can increase the risk of side-effects.
How to store desloratadine
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.
Preguntas frecuentes
Volver al contenidoHow long does desloratadine take to work?
Desloratadine usually starts to work within about 1 hour, with full relief from allergy symptoms often building over the first few hours after taking a dose.
How long does desloratadine last?
A single dose of desloratadine works for around 24 hours. This is why it is taken once a day to provide all-day relief from allergy symptoms.
Can I take desloratadine every day?
Yes, desloratadine can be taken daily during allergy season or while symptoms persist. For long-term or continuous symptoms, your doctor may advise ongoing use, but it should be reviewed if symptoms continue for a long time.
What should I do if desloratadine does not work?
If your symptoms do not improve after a few days, speak to a pharmacist or doctor. You may need a different antihistamine or additional treatment to better control your allergy symptoms.
Can I take desloratadine when pregnant?
It is generally considered safe to use desloratadine during pregnancy. However, always let your doctor know if you are pregnant before taking it.
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, Neoclarityn® 5 mg film-coated tablets; Organon Pharma (UK) Limited, El Compendio Electrónico de Medicamentos. Fechado en octubre de 2021.
- Manufacturer's PIL, Neoclarityn® Oral Solution; Organon Pharma (UK) Limited, El Compendio Electrónico de Medicamentos. Fechado en octubre de 2021.
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About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
About the reviewerView full bio

Dr Colin Tidy, MRCGP
Médico General, Autor Médico
MBBS, MRCGP, MRCP (Paediatrics), DCH
Dr Colin Tidy is an NHS Doctor, based in Oxfordshire.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Próxima revisión: 18 de diciembre de 2027
19 Jun 2023 | Última versión

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