Latanoprost eye drops
Xalatan, Monopost
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSLast updated 23 Jan 2025
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Latanoprost reduces raised pressure in your eye.
Remember to use the eye drops every evening.
The drops can alter the colour of your eyes over time, and cause your eyelashes to grow darker and thicker. Your doctor will discuss this with you.
At a glance
Latanoprost eye drops lower high pressure inside the eye.
They are used to treat ocular hypertension and open-angle glaucoma.
Latanoprost works by increasing fluid drainage from the eye.
To use, tilt your head back, pull down your lower eyelid, and put one drop into the pocket.
Common side-effects include eye irritation, redness, and changes to eyelash length or iris colour.
Store eye drops as directed on the label; some need refrigeration before opening.
Once opened, bottle drops should be used within four weeks.
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About latanoprost eye drops
Tipo de medicamento | Prostaglandin analogue |
Usado para | To reduce raised pressure within your eye |
También llamado | Xalatan®, Monopost®, Medizol® |
Disponible como | Eye drops and single-dose units |
An increase in pressure within your eye can lead to damage to the optic nerve at the back of your eye. When this occurs it is called glaucoma. Glaucoma can lead to a loss of vision if it is not treated. If you have an increased pressure within your eye but without any damage to the optic nerve, this is called ocular hypertension. People with ocular hypertension have an increased risk of later developing glaucoma. Treatment with latanoprost eye drops helps to reduce eye pressure in people with ocular hypertension, and to prevent further eye damage in people with open-angle glaucoma.
Latanoprost eye drops work by increasing the drainage of fluid from the inside of your eye. This helps to lower the pressure within your eye. Latanoprost eye drops are available as bottles of eye drops which contain a preservative, and also as single-dose units which do not contain a preservative.
Sometimes, more than one type of eye drop is needed to keep the pressure in the eye low. If this is the case for you, you may be asked to use two different eye drops, or you may be given drops which combine more than one type. Latanoprost is available as a combination eye drop with another medicine which reduces eye pressure, called timolol (a beta-blocker), in brands such as Xalacom® and Fixapost®.
The combination product Roclanda® contains latanoprost with a medicine called netarsudil. This medicine works in a different way to latanoprost but also allows more fluid to drain from the eye and reduces the pressure.
Before using latanoprost eye drops
Volver al contenidoSome 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 using latanoprost it is important that your doctor knows:
Si estás embarazada o amamantando.
If you have had surgery on your eye to replace or remove the lens (such as cataract removal).
Si tienes un problema respiratorio como asma o EPOC.
If you have had problems in the past with viral infections in your eye.
If you are taking or using any other medicines or eye drops. This includes any medicines you are taking which are available to buy without a prescription, as well as herbal and complementary medicines.
Si alguna vez has tenido una reacción alérgica a un medicamento.
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How to use latanoprost eye drops
Volver al contenidoWash your hands well before you use the drops.
Open the bottle, or if you are using a single-use dose unit, remove the tip of the unit.
Inclina un poco la cabeza hacia atrás y tira del párpado inferior hacia abajo para formar un bolsillo.
Hold the bottle or single-use dose unit upside down near to your eye. Try not to touch your eye as you do this.
Apply enough pressure to release one drop into your eye. Do not use more than one drop - using several drops does not improve your glaucoma but will increase the risk of side-effects.
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 if you have been told to use the drops in both eyes. If you are using single-dose units, there is sufficient liquid in one unit to put a drop into both eyes.
Put the cap back on the bottle, or if you are using the single-use dose unit, throw it away.
Obteniendo el máximo de tu tratamiento
Volver al contenidoBefore you start using the eye drops, read the manufacturer's printed information leaflet from the pack. It will give you more information about the eye drops and will provide you with a full list of the side-effects which you could experience from using them.
Use one drop in the eye (or eyes) affected once a day. Your doctor may recommend you use the drops in the evening.
Remember to use the drops every day. If you do forget, do not double up on the next day to make up for a missed dose.
Take care not to touch the tip of the dropper with your eye, fingers, or any other surface. This is to prevent the drops from becoming contaminated.
If any of the eye drop solution runs on to your face, wipe it away as soon as you can with a clean tissue or hanky.
If you are using any other eye drops, leave 5-10 minutes between applying each one. 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.
When first put in, eye drops can make your eyes water and may sometimes cause blurred vision. If this happens, it should quickly clear. Make sure you can see clearly again before you drive, or before using tools or machines.
Keep your regular appointments with your doctor and eye clinic so that your progress can be checked.
Do not wear soft contact lenses unless your doctor has advised you otherwise. This is because bottles of eye drops tend to contain preservatives which can affect some soft contact lenses. The single-dose units do not contain a preservative.
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Can latanoprost eye drops cause problems?
Volver al contenidoAlong with their useful effects, eye drops can cause unwanted side-effects although not everyone experiences them. The table below contains the most common ones associated with latanoprost. You will find a full list in the manufacturer's information leaflet supplied with the drops. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist for further advice if any of the following continue or become troublesome.
Very common latanoprost side-effects (these affect more than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Irritation or redness in your eye, eye pain, longer or thicker eyelashes, darker skin on your eyelids | Many people using the drops notice these changes - discuss them with your doctor if you are concerned. If your eyes become so irritated that you don't want to use the drops, or if they water excessively, please let your doctor know about this straightaway. Your treatment will need to be reviewed |
Changes in the colour of the iris of your eyes (this can be permanent) | Discuss this with your doctor if you are concerned about it |
Common latanoprost side-effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Dolor de cabeza | Ask your pharmacist to recommend a suitable painkiller. If the headaches continue, let your doctor know |
Swollen (inflamed) eyelids (blepharitis) | Ask your pharmacist to recommend a suitable treatment |
Sensibilidad a la luz | Wearing sunglasses may help |
Si experimenta otros síntomas que cree que pueden deberse a las gotas para los ojos, hable con su médico o farmacéutico para obtener más consejos.
How to store latanoprost eye drops
Volver al contenidoMantenga todos los medicamentos fuera del alcance y la vista de los niños.
Please check the information on the label for the correct storage requirements. Some brands of eye drops can be stored in a cool, dry place, away from direct heat and light. Other brands need to be stored in a refrigerator before being opened.
Eye drops in bottles can be used for four weeks once the bottle has been opened. Even if there is still some solution remaining after this time, throw the bottle away and use a new one. This will help to prevent the risk of eye infections.
Información importante sobre todos los medicamentos
Volver al contenidoInformación importante sobre todos los medicamentos
Si compras algún medicamento, consulta con un farmacéutico que sea seguro tomarlo junto con tus otros medicamentos.
This preparation is for use in eyes only. If someone swallows some of it, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.
Si vas a someterte a una operación o a un tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás tomando.
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.
Preguntas frecuentes
What is the difference between glaucoma and ocular hypertension?
Glaucoma is a condition where increased pressure inside your eye has caused damage to the optic nerve, potentially leading to vision loss if not treated. Ocular hypertension means you have increased pressure in your eye, but no damage to the optic nerve has occurred yet. People with ocular hypertension are at a higher risk of developing glaucoma later on.
How do latanoprost eye drops help to treat my eye condition?
Latanoprost eye drops work by increasing the natural drainage of fluid from inside your eye. This process helps to lower the pressure within your eye, which is beneficial for people with ocular hypertension to reduce their risk of glaucoma, and for those with open-angle glaucoma to prevent further damage to the optic nerve.
Are there different types of latanoprost eye drops available?
Yes, latanoprost eye drops come in a few different forms. You can get them in bottles that contain a preservative, or as single-dose units which do not contain any preservative. Latanoprost is also available in combination with other medicines, such as timolol (in brands like Xalacom® and Fixapost®) or netarsudil (in Roclanda®), if your doctor decides you need more than one type of eye drop to manage your eye pressure.
What should I do if I forget to use my latanoprost eye drops one day?
If you miss a dose of your latanoprost eye drops, do not try to make up for it by using a double dose the next day. Simply continue with your usual daily application as prescribed. It's important to remember to use the drops every day for the best effect.
Can latanoprost eye drops affect my contact lenses?
Yes, if you wear soft contact lenses, you should generally avoid wearing them when using latanoprost eye drops, unless your doctor specifically advises otherwise. This is because many bottled eye drops contain preservatives that can affect soft contact lenses. However, single-dose units of latanoprost do not contain a preservative.
Will latanoprost eye drops change the colour of my eyes or eyelashes?
One of the very common side-effects of latanoprost can be changes in the colour of the iris of your eyes, which can be permanent. It can also cause your eyelashes to become longer or thicker, and the skin on your eyelids to darken. If you are concerned about any of these changes, you should discuss them with your doctor.
How long can I use an opened bottle of latanoprost eye drops?
Once you have opened a bottle of latanoprost eye drops, you can use it for up to four weeks. After this period, even if there is still some solution left, you should discard the bottle and start a new one. This helps to reduce the risk of eye infections.
Lecturas adicionales y referencias
- Manufacturer's PIL, Xalatan® 50 micrograms/ml eye drop solution; Upjohn UK Ltd (Pfizer Ltd), The electronic Medicines Compendium. Dated October 2023.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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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 reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Próxima revisión: 23 de enero de 2028
23 Jan 2025 | Última versión

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