Gotas para los ojos de nedocromil sódico
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 28 Feb 2023
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Clinical author's note Michael Stewart 19/2/2020: Rapitil® eye drops were discontinued in the UK in April 2018. At the time of review there are no branded or generic eye drop products containing nedocromil available in the UK. Nedocromil eye drops may still be available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
Nedocromil sodium eye drops help to prevent red, watery, itchy eyes caused by allergies.
The drops are usually used twice a day. If your symptoms are more severe, your doctor may suggest you use them three or four times daily.
When first put in, eye drops can cause blurred vision. Wait until this clears before you drive or before you use tools or machines.
De un vistazo
Nedocromil sodium eye drops are used to prevent symptoms of allergic conjunctivitis like red, watery, and itchy eyes.
These drops can be prescribed for adults and older children.
You should not wear soft contact lenses while using these drops, unless advised by your doctor.
When applying, press gently on the side of your nose to help the drop stay in your eye.
Mild eye irritation or blurred vision can occur, but usually clears quickly.
If symptoms do not improve within a few days or worsen, see a doctor.
Eye drops only last for four weeks once opened.
About nedocromil sodium eye drops
Tipo de medicamento | Anti-allergic eye drops |
Usado para | To relieve the symptoms of allergic conjunctivitis |
También llamado | Alocril® (in US); Rapitil® (discontinued) |
Disponible como | Gotas para los ojos |
Conjuntivitis alérgica causes red, watery, itchy eyes. It is caused by exposure to irritants such as plant pollens, pet fur, cosmetics or house dust mite. Seasonal allergic conjunctivitis occurs at certain times in a year, a common cause being an allergy to pollen in the fiebre del heno season. Perennial allergic conjunctivitis persists throughout the year. This is commonly due to an allergy to house dust mite or animal hair.
Nedocromil sodium eye drops can help prevent the symptoms of allergic conjunctivitis. The drops work by stopping the release of certain natural substances which can lead to an allergic reaction in your eyes. The drops can be prescribed for adults and for older children.
Before using nedocromil sodium eye drops
To make sure that this is the right treatment for you, before you start using nedocromil sodium eye drops it is important that your doctor knows:
Si usas lentes de contacto blandos.
Si estás embarazada o amamantando.
If you have ever had an allergic reaction to any eye drops.
How to use nedocromil sodium eye drops
Lávese las manos antes de usar las gotas.
Retire la tapa.
Tilt your head back a little and then pull the lower lid of your eye downwards to form a pocket between the eye and the lower eyelid.
Sostén la botella boca abajo cerca de tu ojo. Intenta no tocar tu ojo mientras haces esto.
Apply sufficient pressure to the bottle to release one drop into your eye. Only use a second drop if the first drop missed going into your eye.
Cierra el ojo durante uno o dos minutos y presiona suavemente el lado de tu nariz donde la esquina de tu ojo se encuentra con tu nariz. Esto ayuda a evitar que la gota se drene y la mantiene en tu ojo.
Repeat the process in your other eye.
Coloca de nuevo la tapa.
Obteniendo el máximo de tu tratamiento
Before you start using the eye drops, read the manufacturer's printed information leaflet from the pack. It will give you more information about the drops, and it will also provide you with a full list of the side-effects which you could experience from using them.
Please follow the directions your doctor gives to you for using the eye drops. You could be asked to use the drops two, three or four times a day. Put one drop into both eyes for each dose. Try to use the drops at regular intervals throughout the day, and try not to miss any doses. If you are using the drops for hay fever, do not use them continually for more than three months.
Take care not to touch your eye, fingers, or any other surface with the dropper of the bottle. This could contaminate the drops left in the bottle.
When you first put the drop into your eye, it may cause blurred vision. This should quickly clear, but make sure you can see clearly again before you drive, or before you use machines or tools.
If you are using any other eye drops, leave 5-10 minutes between using the other eye drops. This is to prevent more liquid going into your eye than it can handle. Otherwise the drops will overflow from your eye and not have the intended effect.
If your symptoms do not start to improve within a few days, or if they become worse, make another appointment to see a doctor.
Do not wear soft contact lenses while you are using nedocromil sodium eye drops unless your doctor has advised you otherwise. This is because there is a preservative in bottles of eye drops which can affect soft contact lenses.
Can nedocromil sodium eye drops cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with nedocromil sodium eye drops. The best place to find a full list of the side-effects which can be associated with nedocromil is from the manufacturer's printed information supplied with the drops. 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.
Common nedocromil sodium side-effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Mild eye irritation such as burning or stinging, blurred vision | These usually disappear within a few minutes of applying the eye drops. Do not drive and do not use tools or machines until your vision is clear again |
Un sabor inusual en tu boca | After using the drops, remember to press gently on the side of your nose where the corner of your eye meets your nose. You can also try having a drink to take the taste away |
Occasionally people can be allergic to eye drops, particularly when the eye drops contain a preservative. If you notice a rash around your eyes, or any swelling or increased itching, stop using the drops and contact a doctor for advice. If you experience any other symptoms which you think may be due to the eye drops, speak with your doctor or pharmacist for further advice.
How to store nedocromil sodium eye drops
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.
Eye drops only keep for four weeks once the bottle has been opened - do not use the drops if the bottle has been open for longer than this. This will help prevent the risk of eye infections.
Información importante sobre todos los medicamentos
Información importante sobre todos los medicamentos
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
Make sure that the person prescribing this medicine knows about any other medicines that you are using. This includes medicines you buy and herbal and homeopathic medicines.
If you buy any medicines, check with a pharmacist that they are safe to use with your prescribed medicines.
If you suspect that someone has swallowed some of this medicine by accident, contact the accident and emergency department of your local hospital for advice.
Si vas a someterte a una operación o tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás usando.
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.
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Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
Can children use nedocromil sodium eye drops?
Yes, nedocromil sodium eye drops can be prescribed for older children, as well as adults.
How long can I use nedocromil sodium eye drops if I'm using them for hay fever?
If you are using the drops specifically for hay fever, you should not use them continuously for more than three months.
What should I do if the eye drops cause an unusual taste in my mouth?
If you experience an unusual taste in your mouth after using the drops, try pressing gently on the side of your nose where the corner of your eye meets your nose. You can also try having a drink to help take the taste away.
What should I do if my symptoms don't improve or get worse?
If your symptoms do not start to improve within a few days, or if they become worse, you should make another appointment to see a doctor.
How do I know if I'm having an allergic reaction to these eye drops?
Occasionally, people can be allergic to eye drops, especially if they contain a preservative. If you notice a rash around your eyes, or any swelling or increased itching, you should stop using the drops and contact a doctor for advice.
Lecturas adicionales y referencias
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
Acerca del revisor

Sid Dajani
Sultan Dajani se graduó en la Escuela de Farmacia de Londres en 1994 y se convirtió en el miembro más joven elegido para el consejo de la Sociedad Real de Farmacia desde su fundación en 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Artículo también disponible en Inglés, Alemán, Español, Francés, Italiano, Portugués, Hindi, Hebreo, Árabe, y Sueco.
Próxima revisión: 27 Ago 2027
28 Feb 2023 | Última versión

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