Levocetirizina para la alergia
Xyzal
Revisado por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 19 Ene 2025
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Levocetirizine relieves allergic symptoms.
Tomar una dosis al día.
Levocetirizine 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.
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About levocetirizine
Tipo de medicamento | Un antihistamínico (no somnoliento) |
Utilizado para | Allergies such as hay fever and some allergic skin reactions |
También llamado | Xyzal® |
Disponible como | Comprimidos y medicamentos orales líquidos |
Levocetirizine is an anti-allergy medicine. It stops the effects of a substance called histamine and this helps to relieve the symptoms of allergies such as hay fever and urticaria.
Exposure to substances such as pollen, pet fur, house dust or insect bites can cause your body to produce allergic symptoms. Cells in the lining of your nose and eyes release histamine when they come into contact with these substances. This leads to inflammation in your nose and eyes, which produces symptoms such as sneezing and watery eyes.
Urticaria is a condition where an itchy skin rash develops. The rash can be triggered by an allergy to a substance such as a soap or a detergent.
Before taking levocetirizine
Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking levocetirizine it is important that your doctor knows:
Si está embarazada o en periodo de lactancia.
Si tiene algún problema con el funcionamiento de sus riñones.
Si padece epilepsia.
Si padece un raro trastorno sanguíneo hereditario llamado porfiria.
Si toma o utiliza otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que pueda adquirirse sin receta, así como medicamentos a base de plantas y complementarios.
Si alguna vez ha tenido una reacción alérgica a otro antihistamínico o a cualquier otro medicamento.
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How to take levocetirizine
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about levocetirizine, and will also provide you with a full list of side-effects which you could experience from taking it.
The usual dose for adults and older children is one (5 mg) tablet daily. If it is for a younger child (aged 2-6 years), they are likely to be prescribed liquid medicine, so check the label on the bottle carefully to make sure you give the correct dose for the age of your child.
Most people take levocetirizine in the morning, but you can take it at whatever time of day you find easiest to remember. Try to take your doses at the same time of day, each day, as this will help you to remember to take them regularly. You can take levocetirizine either before or after a meal. The tablets are best swallowed with a drink of water.
If you have been given the liquid medicine, an oral dose syringe will be included in the pack. This is to measure out the dose. Put the tip of the syringe into the medicine and draw the plunger up to the mark which corresponds to the dose prescribed. Remove the syringe from the bottle and empty its contents on to a spoon or into a small glassful of water. The medicine can be swallowed either undiluted, or diluted with water. Remember to rinse the syringe with water after using it.
If you forget to take a dose at your usual time, take it as soon as you remember. If you do not remember until the following day then leave out the forgotten dose from the previous day and take the dose that is due that day. Do not take two doses at the same time to make up for a missed dose.
Aproveche al máximo su tratamiento
Many people only need to take an antihistamine when they have symptoms. Unless you are told otherwise, you should stop taking levocetirizine once your symptoms have eased.
Although levocetirizine 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 levocetirizine, 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.
Si va a someterse a una operación, a un tratamiento o a unas pruebas (sobre todo si es para detectar una alergia), no olvide decir que está tomando un antihistamínico.
If you buy any medicines 'over the counter', 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.
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Can levocetirizine cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains the most common ones associated with levocetirizine. 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 continue or become troublesome.
Common levocetirizine side-effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si me ocurre esto? |
Feeling tired, dizzy or sleepy | Si esto ocurre, no conduzca ni utilice herramientas o máquinas. |
Boca seca | Prueba a mascar 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 persisten, informe a su médico. |
Feeling sick (nausea), tummy ache (abdominal pain) | Comidas sencillas: evite los alimentos ricos o picantes. |
Si experimenta cualquier otro síntoma que considere que puede deberse al medicamento, consulte a su médico o farmacéutico.
How to store levocetirizine
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.
The liquid medicine only keeps for three months once the bottle has been opened. Do not store it or use it for longer than this.
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, Xyzal® 5 mg tablets; UCB Pharma Limited, The electronic Medicines Compendium. Dated July 2022.
- Manufacturer's PIL, Xyzal® 0.5 mg/ml Oral Solution; UCB Pharma Limited, The electronic Medicines Compendium. Dated July 2022.
- 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: 19 de enero de 2028
19 Ene 2025 | Última versión

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