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Loratadine for allergies

Clarityn, Lorapaed

Loratadine relieves allergic symptoms.

Take one dose a day.

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

Antihistamínico (no produce somnolencia)

Usado para

Allergies including hay fever and allergic skin rashes

También llamado

Clarityn® Allergy; Lorapaed®

Disponible como

Tabletas y medicina líquida oral

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 condición en la que se desarrolla una erupción cutánea con picazón. La erupción puede ser 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.

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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  • 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.

  • 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.

  • 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 '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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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 experimento esto?

Feeling tired or sleepy

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

Dolor de cabeza

Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza continúan, consulta a tu 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.

  • Mantenga 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

Si compras algún medicamento, consulta con un farmacéutico que sea seguro tomarlo junto con tus otros 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.

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Lecturas adicionales y referencias

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Historial del artículo

La información en esta página está escrita y revisada por pares por clínicos calificados.

  • Siguiente revisión prevista: 12 de julio de 2027
  • 13 Jan 2023 | Última versión

    Última actualización por

    Michael Stewart, MRPharmS

    Revisado por pares por

    Sid Dajani
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