Optilast eye drops

Optilast eye drops, containing an antihistamine called azelastine hydrochloride, is available from Medicinesbymailbox online doctor.

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Optilast eye drops

Optilast eye drops

Prescription fees

Medicinesbymailbox supplies medicine on prescription and charges a small prescription fee based on the order value of each prescription.Prescriptions are issued by our doctors online and sent electronically to our pharmacy.If you have your own private paper prescription please post to our pharmacy (details).

Order value Prescription fee
Any Order Value £0.00

Optilast product information

Optilast eye drops contains an antihistamine called azelastine hydrochloride. Our body produces a substance called histamine when allergy occurs and antihistamines help to stop the effect of histamine. This helps to relieve inflammation of the eye.

How to take

The usual dose for hay fever is 1 drop into each eye, twice daily. It can also be used preventatively if you anticipate hay fever. For specific directions on administration, refer to the patient information leaflet.
If you do not see an improvement after 48 hours, speak to your doctor or pharmacist for advice. You should also not use it for more than 6 weeks.

You should also wear glasses instead of soft contact lenses while on this medicine. If you wear other types of contact lenses, wait at least 15 minutes after administration before putting them back in.

Side effects of Optilast

Like all medicines, Optilast might cause some side effects, although not everyone gets them.

The most common side effects associated are irritation of the eyes and blurred vision. Side effects are usually mild but if you are concerned, speak to a doctor or pharmacist. It is important that if you have temporary blurred vision that you avoid driving or operating machinery until your vision returns to normal.

If you experience severe allergic reaction with symptoms such as difficulty breathing, swelling of eyes, lips or face, or an itchy rash, you should stop using Optilast eye drops immediately and seek urgent medical advice.

For a full list of side effects, please refer to the patient information leaflet attached below.


When ordering from Medicinesbymailbox, you may be required to fill in a series of Yes/No questionnaires to determine your suitability to the medication. You should NOT use Optilast without consulting a doctor if:
  • you are allergic to azelastine hydrochloride
  • your eye hurts but you do not have symptoms in your nose (may be signs of an infection)
  • you are pregnant or breast feeding

Patient information leaflet

The 'patient information leaflet' supplied with the medication should be read before use.