United States / USD Country & Currency
Country
United States
Currency
US Dollars
Save
Country
Australia
Gibraltar
Hong Kong
Malta
Northern Ireland
Puerto Rico
Scotland
Singapore
Switzerland
United Kingdom
United States
Currency
US Dollars
GB Pounds
AU Dollars
Euro
Explore our range Categories
Ask us a question 877-271-6591 or 800-868-9064

Shipping delays due to Covid-19 Virus

Please fill the form to receive updates when we can ship your order.

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.
Read more
5 Stars

Customer Review

Hear from more than 1000 happy customers!
Heart Icon
"As a satisfied customer of Inhouse Pharmacy for many years now, for both pet meds and personal use, I can confirm that the service provided is exemplary. From helpful people when I have queries, to efficient ordering and fast delivery (my most recent order arrived in the UK in a week), I'm more than happy to recommend them."
Jane UK • May 2026
Heart Icon
"I have been a happy and satisfied customer of Inhouse Pharmacy for over 20 years. I have always been treated with great courtesy and my yearly order has always arrived between ten and twelve days after submitting the order. I would unqualifiedly recommend this company."
Wayne VA, USA • June 2026
Heart Icon
"Always great products and service and I have been coming back for over 20 years now! THANK YOU"
Cathy Lees OK, USA • June 2025
Heart Icon
"Dear Pharmacist, I want to extend my sincere appreciation for your professionalism and kind demeanour regarding my medication. I received it today, Monday, May 18 and in fewer than two weeks!! Remarkable. Please extend my thanks to the team. You are an asset to your profession. Thank you once again. I look forward to ordering again with your entity in the future."
MaryAnn Ulander NV, USA • May 2026
Heart Icon
"My experience with Inhouse Pharmacy in Vanuatu was smooth and efficient from beginning to end. I found the instructions on the website easy to understand and follow. I was also able to get phone information easily. I would offer one suggestion: that the office hours and time zone be indicated on the website. Furthermore, I was kept abreast of my order status, and the order arrived safe and sound right around the time I was told it would. I would not hesitate to order products from Inhouse again. Thank you."
Taylor NM, USA • June 2026
Heart Icon
"Been using inhouse for about 6 years now and they've never let me down. On one occassion I was unable to get my parcel so I assumed I had lost money, but two weeks later they refunded me. Great company."
Katie Heys UK • June 2025
Heart Icon
"Ordered from you many years ago at your old website. Was very satisfied with your service then. Found you when I downloaded my bookmarks to a newer laptop. Put you in my favourite category."
Robert Lypka NC, USA • June 2025
Heart Icon
"You guys are great keep doing what you're doing, i'd give y'all a tip if there was an option"
Stevie Rhodes UK • May 2025
Heart Icon
"Thank you again so very much! I couldn’t wish for a better company to do business with. Many thanks!"
Suze Moon WA, USA • April 2025
Heart Icon
"Thank you. I received my first shipment last week and I am very happy with the whole ordering experience and results."
Katherine FL, USA • November 2024
 

This website uses cookies. View our policy and select your preferences here