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
"You guys are the best Bonnie, thank you."
Mike OK, USA • February 2024
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
"Thank You for the Professional and Prompt way you have handled my missing shipment.  I have been doing business with you for a long time and I so much appreciate when a company values their customers and addresses issues in such a caring way and with such integrity.  I will be doing business with you for a very long time to come.  Thank You again."
Sheila OH, USA • January 2024
Heart Icon
"Thank you for your timely assistance in sending the replacement. I greatly appreciate your customer service."
Lenore OR, USA • January 2024
Heart Icon
"Inhouse Pharmacy are great. So reliable and a great range of products. Keep at it!"
Philip Honey UK • September 2025
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
"Order received - thanks for excellent service!"
Fred MO, USA • January 2024
Heart Icon
"Thank you as always for the great customer service and always responding quickly to any questions I have."
David MI, USA • January 2024
Heart Icon
"Hello, I have excellent news to report. My replacement order arrived today, thank you so much for sending it out to me. Everything came perfectly intact and I have already began to take the meds. Thank you so much for everything, you are a great company. Take care and be blessed."
Mira DE, USA • February 2024
Heart Icon
"Thank you for the reply. It sure is encouraging. It’s also pointing to a never fail. To years of me using In-house Pharmacy and for quality pharmaceuticals without a hitch. "
William WV, USA • January 2024
 

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