Available size:

8 ml

Price £12.99

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Expected delivery date:

Wednesday, 13 December 2023

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UK Registered

Discreet & Confidential

Discreet &

  • Overview
  • FAQ
  • Side Effects
  • Patient Information Leaflet
  • Reviews

What is Optilast

Optilast Eye Drops helps combat seasonal allergic conjunctivitis or allergic (perennial) conjunctivitis that is not seasonal. These reactions occur as a result of an allergy-caused inflammation of the eye's outermost layer, which corresponds to hay fever.

How does Optilast work?

Optilast does its magic thanks to its main active ingredient, azelastine hydrochloride, which is a type of medicine known as an antihistamine. Azelastine works its wonders by preventing the actions of histamine; histamine is a substance produced by the body when it identifies and reacts to foreign material, such a pet fur or pollen, among others (which in itself are called allergens). Histamine causes a volatile chain reaction that results in allergic symptoms. Whereas a result, it causes inflammation and symptoms such as itchy, red and watery eyes. When Azelastine is administered into the eyes, it blocks the histamine receptors in the eyes, and so stops this chain reaction, and a result should start to relieve the eye symptoms within 15 to 30 minutes.

How effective is Optilast?

Optilast is has been clinically proven to alleviate the symptoms brought upon by conjunctivitis. To purchase Optilast, it is required that you get a prescription, so if you need this medicine, please fill out our medical questionnaire first.

Can I buy Optilast online? 

Optilast can be purchased online from most online pharmacies, and it comes at a very affordable, the only pre-requisite that you need is an official prescription from a doctor. Once you have that, you can purchase a bottle; they come in at 8ml a container which is more than enough to help in your dire times.

Feel free to speak to medical professionals at Click Pharmacy if you need further advice on how to use the medication or if it is right for you.

What are the side effects of Optilast? 

Like all medicines, Optilast can cause several adverse effects, such as slight eye irritation (burning, itching, watering). This should not last long. Another side effect presents as a bitter taste in your mouth. This should quickly disappear, especially if you drink some water. Swelling or pressure of the eye may occur; these adverse effects may come due to an allergic reaction. If any of the more severe side effects do happen, please go to a doctor immediately.

When shouldn’t I take Optilast?

Do not take Optilast if you are allergic to any of the active or inactive ingredients, as these may exacerbate the situation you’re trying to improve by a rather large margin. You should not give this medicine to anyone under the age of 4 years. Make sure your doctor knows if you are pregnant or breastfeeding, as there is a small possibility that Azelastine ma pass to the bloodstream and, thus, may negatively affect the baby. Consult your doctor beforehand. Do not use the eye drops if the bottle has been opened for more than 4 weeks, as it could have been contaminated with dirt or germs that could cause even more severe eye infections.

What dose should I choose and for how long should I take it?

Before use, it is worth knowing that the treatment should not, under any circumstance, surpass a 6-week duration, as a clinical trial has determined that it is not healthy on the eye when this medicine is used for such a prolonged and continuous period. 

For seasonal allergic conjunctivitis, the usual dosage in adults and children over the age of 4 is one drop in each eye twice daily that can be increased, if necessary, to four times daily. If allergen exposure is anticipated, Optilast should be administered prophylactically prior to the exposure. 

For non-seasonal (perennial) allergic conjunctivitis, the usual dosage in adults and children 12 years and older is one drop in each eye twice daily that can be increased, if necessary, to four times daily.

If symptoms have not improved or have even worsened after 48 hours of treatment, it is advised that you consult a doctor.

How should I use Optilast?

Before use, please wash your hands to reduce the risk of infection. Put one drop into each eye twice daily or when needed to relieve symptoms. If necessary, you can increase the dosage to 4 times a day. As for hay fever (seasonal conjunctivitis), you can follow the same instructions as above. Your treatment should not last longer than 6 weeks. If your symptoms have not improved or have worsened after 48 hours, consult your doctor.

What is the difference between Optilast, Rapitil eye drop, and Opatanol?

The main difference between Optilast and Rapitil eye drop is that while helping with the same issue, Rapitil won’t have an immediate effect, whereas Optilast does its job immediately.

The main difference between Optilast and Opatanol is that the latter can be taken from the age of 3, whereas Optilast can only be taken from the age of 4 years.

How do Optilast Eye Drops provide relief from irritation?

The active ingredient, azelastine hydrochloride, is an antihistamine. This blocks receptors in the eye which may cause irritation, resulting in any symptoms disappearing after use.

Can I put in contact lenses after using Optilast Eye Drops?

After using Optilast Eye Drops you should wait 15 to 30 minutes before putting in Optilast Eye Drops.

Do I need to remove contact lenses before using Optilast Eye Drops?

Yes, it is necessary to remove any contact lenses before using Optilast Eye Drops.

Like all medicines, after using Optilast Eye Drops you are likely to experience a number of side effects. Common side effects include the following:

  • Slight burning
  • Blurred vision
  • Watery eyes
  • Temporary itching

These side effects should disappear within 30 minutes of use. If any of these side effects begin to worsen, you should stop using Optilast Eye Drops and seek medical advice from a GP or pharmacist as soon as possible.

Always read the patient information leaflet before starting your treatment. The patient information can be found here

Authored by

Last reviewed 11 April 2023

Superintendent Pharmacist GPhC No.2220953

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