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Antihistamines / Allergy

Our antihistamines/allergy class of eye medications are used to treat allergic eye condition like conjunctivitis caused by seasonal allergies like hay fever or perennial allergies like allergy to animal dander, to relieve symptoms.

Use the search feature to quickly find the product you are looking for, by entering either the active ingredient, e.g. olopatadine or the product name, e.g. Patanol

Allergic conjunctivitis

Allergic conjunctivitis is inflammation of the conjunctiva, which is the inner lining of the eyelids and sclera of the eye (white part of the eye). It is caused by an allergic reaction to allergens such as pollen, animal dander or house dust mites with symptoms including swollen red eyes, itching and eye watering.

Antihistamine eye drops

Eye drops containing the antihistamine olopatadine, can be used to relieve symptoms of allergic conjunctivitis. Olopatadine works by binding to the H1 receptor on the conjunctival cells in the eye and this blocks the action of histamine, which is released by mast cells during an allergic reaction and is responsible for most of the symptoms of allergic conjunctivitis.
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Blaire MI, USA • December 2023
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Brian CA, USA • January 2024
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Suze Moon WA, USA • April 2025
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Katie Heys UK • June 2025
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"I want to say a big thank you to everyone at Inhouse Pharmacy. Over the last 4 years, you have been such a valuable part of my life. You have listened to me, helped me and shown such kindness. It is not an exaggeration to say that without the supply of medication from yourselves, I would not be alive today. People like myself in the UK are literally left to our own devices as the medical industry denies us life critical care. Please keep up the good work, and help as many people as you can. Thank you for all your help. "
Alan UK • October 2024
 

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