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Formulation : Eyedrop
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Pataday 0.20% 2.5mL $61.10 Add To Cart
Pataday 0.20% 5mL $105.40 Add To Cart
Pataday 0.20% 10mL $196.30 Add To Cart
Dosage: 0.20%
Quantity: 2.5mL
Price: $61.10
Dosage: 0.20%
Quantity: 5mL
Price: $105.40
Dosage: 0.20%
Quantity: 10mL
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Prescription Required
Formulation : Eyedrops
Drug Name Dosage Quantity Price Buy Now
Olopatadine 0.20% 5mL $43.20 Add To Cart
Dosage: 0.20%
Quantity: 5mL
Price: $43.20


Pataday is an ophthalmic antihistamine medication used to treat itchy or watery eyes caused by allergies.

Olopatadine is a tricyclic compound that inhibits histamine receptors while offering anti-inflammatory and mast cell-stabilizing properties. These actions allow Pataday to treat allergy symptoms from conditions such as allergic conjunctivitis and allergic rhinitis when applied to the eyes.

This allergy medication is an effective treatment for allergic rhinoconjunctivitis conditions. Applied directly to the eyes, these Pataday eyedrops help reduce inflammation and relieve itching related to these conditions.

Uses and Dosage

The directed use of Pataday eyedrops will vary depending on the individual and allergic condition being treated. Follow your doctor’s instructions and read packaging labels carefully to ensure the best results from your treatment.

  • Thoroughly wash your hands before using the eye medication
  • Do not administer eyedrops while wearing soft contact lenses
  • Use Pataday at least 15 minutes before inserting contact lenses
  • Most adults apply one drop daily into each affected eye
  • To apply, tilt back your eye and create a small pocket by gently pulling down your lower eyelid
  • Hold the Pataday dropper above your eye and squeeze a drop into the pocket you created
  • Close your eyes for 1 or 2 minutes once applied
  • Wait at least 10 minutes before using any other eye medications
  • Do not touch your eye with the dropper tip
  • Do not use the eyedrops if the liquid has turned cloudy or changed colours
  • Store at room temperature away from moisture and heat
  • Keep the bottle tightly closed and do not let the liquid freeze

Side Effects

Pataday may cause some side effect to develop while reducing inflammation and inhibiting histamine receptors. Many also do not experience any side effects when using these eyedrops. Speak with your doctor for more specific information regarding any symptoms that you may develop while using olopatadine.

Serious Side Effects

Some serious adverse reactions may occur when using olopatadine. Stop applying these Pataday eye drops and call your doctor right away if you have any of the following side effects:

  • Eye pain or changes in vision
  • Worsening eye itching or itching that lasts longer than 72 hours
  • Severe burning, stinging, or irritation after application
  • Eye swelling, redness, severe discomfort, crusting, or drainage (signs of an infection)

Allergic Reactions

Do not use Pataday if you are allergic to olopatadine or any of the listed ingredients. Stop using these eyedrops and contact your doctor if you develop signs of an allergic reaction.

Pataday allergy symptoms may include:

  • Hives
  • Difficulty breathing
  • Swelling of face, lips, tongue, or throat


If you have an eye infection, consult with your doctor before using Pataday to ensure your safety and avoid aggravating the infection.

Tell your doctor if you are pregnant or breastfeeding while using olopatadine to ensure the safety of you and your child.

Pataday is not an approved allergy treatment for anyone younger than two years of age.

Some drugs may interact with olopatadine and cause adverse reactions. Tell your doctor about all the medications you take, including over the counter medicine, vitamins, and herbal products.

Form and Strength

This antihistamine medication is available in the form of eyedrops.

Pataday eyedrop strength:

  • 20%

The 20% olopatadine eyedrops are available in 2.5, 5, and 10mL volumes.


Is it okay to use Pataday everyday?

Yes, Pataday is designed to be used once or twice each day to treat symptoms of allergic rhinoconjunctivitis. Make sure, however, that you do not apply the eyedrops while wearing soft contact lenses because the solution could stain them. After using Pataday, wait at least 15 minutes before inserting contacts and 10 minutes before using another eye drops.

How long does it take for Pataday drops to work?

Pataday eyedrops should start to relieve itching and watering within 30 minutes of application. Your allergy symptoms should begin to improve within this same time after your first dose and continue to reduce with the daily maintenance doses.



Additional information

Brand Name:


Scientific Name:


Other Names:

Olopatadine, Pataday



Quantities Available:

2.5mL, 5mL, 10mL


Eyedrop, Eyedrops