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Loratadina para las alergias

Clarityn, Lorapaed

Loratadine relieves allergic symptoms.

Tomar una dosis al día.

Loratadine 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, or before using tools or machines.

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About loratadine

Tipo de medicamento

Antihistamine (non-drowsy)

Utilizado para

Allergies including hay fever and allergic skin rashes

También llamado

Clarityn® Allergy; Lorapaed®

Disponible como

Comprimidos y medicamentos orales líquidos

Loratadine belongs to a group of medicines called antihistamines - it is an anti-allergy medicine. It stops the effects of a naturally occurring 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.

La urticaria es una afección en la que aparece una erupción cutánea con picor. La erupción puede estar provocada por una alergia a una sustancia, como un jabón o un detergente.

Loratadine can be prescribed for you by a doctor or dentist, or you can buy it without a prescription at pharmacies and other retail outlets. Tablet formulations are generally suitable for adults and older children, whereas oral liquid medicine is available for younger children. Loratadine is not suitable for children under 2 years of age.

Before taking loratadine

To make sure that this is the right treatment for you (or your child), before you (or they) start taking loratadine it is important that you discuss the treatment with a doctor or pharmacist if:

  • You/they are pregnant, trying for a baby or breastfeeding.

  • You/they have any liver problems. If so, the recommended dose may need to be reduced.

  • You/they have a rare inherited blood disorder called porphyria.

  • You/they are taking or using any other medicines. This includes any medicines being taken which are available to buy without a prescription, as well as herbal and complementary medicines.

  • You/they have ever had an allergic reaction to another antihistamine, or to any other medicine.

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How to take loratadine

  • Before starting the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about loratadine dosage, and it will also provide you with a full list of side-effects which could be experienced from taking it.

  • Recommended doses of loratadine are:

    • For adults and for children aged over 12 years: 10 mg taken once a day.

    • For children aged over 2 years and weighing 31 kg or more: 10 mg taken once a day.

    • For children aged over 2 years and weighing less than 31 kg: 5 mg taken once a day.

  • If you are giving loratadine liquid medicine to a child, make sure you follow the dosing instructions on the bottle carefully so that you measure out the correct dose for the weight of your child.

  • You can take loratadine either with or without food. Some people find it helps to swallow the tablets with a drink of water.

  • If you forget to take a dose, don't worry, just take the next dose when it is needed and then continue as before. Do not take two doses together to make up for a forgotten dose.

Aproveche al máximo su tratamiento

  • Most people only need to take an antihistamine for a short while when they have symptoms. You should stop taking loratadine once your symptoms have eased.

  • Although loratadine is classed as a non-drowsy antihistamine, it can still cause drowsiness in a few people. If you are affected by drowsiness, do not drive, do not use a bicycle, and do not use tools or machines.

  • If you drink alcohol while you are taking loratadine, be aware of its effects on you and do not drink more than moderate amounts. Alcohol can increase the risk of experiencing side-effects from antihistamines - for instance, you may feel more drowsy than usual.

  • 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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Loratadine side-effects

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the more common ones associated with loratadine. The best place to find a full list of the side-effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below. Speak with your doctor or pharmacist if any of the following continue or become troublesome.

Loratadine side-effects (these affect fewer than 1 in 10 people)


¿Qué puedo hacer si me ocurre esto?

Sensación de cansancio o sueño

No conduzca ni utilice herramientas o máquinas mientras esté afectado. No beba alcohol

Dolor de cabeza

Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza persisten, consulte a su médico.

Nervousness (in children)

Speak with a doctor if troublesome

If you experience any other symptoms which you think may be due to loratadine, speak with your doctor or pharmacist for further advice.

How to store loratadine

  • 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

Si compra algún medicamento, compruebe con el farmacéutico que es seguro tomarlo con sus otros 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

Historia del artículo

La información de esta página ha sido redactada y revisada por médicos cualificados.

  • Fecha de la próxima revisión: 12 de enero de 2026
  • 13 Ene 2023 | Última versión

    Última actualización

    Michael Stewart, MRPharmS

    Revisado por expertos

    Sid Dajani
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