
Allerpat 0.1%
Senses Pharma - 5 ml
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Prescription required
Olopatadine (0.1% w/v)
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Allerpat OD Eye Drops is used for allergic conjunctivitis (eye allergy) causing itching, redness and watering.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
Allerpat OD Eye Drops contains Olopatadine (0.1% w/v). It belongs to the Antihistamine / mast cell stabilizer (ophthalmic) class of medicines.
Eye anti-allergy drops typically reduce the release or action of histamine and other inflammatory mediators in the eye. This helps relieve itching, redness and watering associated with allergic conjunctivitis.
For ophthalmic use only. Instil the number of drops as advised by the doctor, usually 1 drop in the affected eye(s) once daily (OD) or as prescribed. Wash hands before use, avoid touching the dropper tip, and remove contact lenses before instillation (reinsert after 15 minutes unless advised otherwise).
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
If you miss a dose of Allerpat Eye Drops, use it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.
An overdose of this medicine can cause severe drowsiness, a fast heartbeat, confusion and, in children, agitation and fits. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of Allerpat OD are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Consult doctor |
|---|---|
| Breastfeeding | Breast feeding UNSAFE |
| Alcohol | No known interaction |
| Driving | Driving UNSAFE |
| Kidney | Kidney |
| Liver | Liver |
| Habit forming | No |
Do not use if you are allergic to any ingredient. Use with caution in children, pregnancy or breastfeeding unless advised by a doctor. Avoid driving or using machines until vision is clear after instillation. Do not wear contact lenses during active eye infection/allergy unless advised; preservatives may discolor soft lenses. Seek medical help if pain, marked swelling, vision changes, or symptoms persist/worsen.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. The sedating antihistamines are not suitable for very young children, or for people with glaucoma or an enlarged prostate, without medical advice.
Other ophthalmic medicines (separate by 5–10 minutes), contact lens solutions; if using multiple eye drops, use ointments last.
Store below 25°C in a cool, dry place away from light. Do not freeze. Keep the bottle tightly closed; discard as per label (commonly 28–30 days) after opening.
You have been prescribed Allerpat Eye Drops to relieve red, itchy and watery eyes caused due to allergic eye diseases. If you wear soft contact lenses, remove them before putting in these eye drops and wait at least 15 minutes before putting your lenses back in. Do not touch the tip of the dropper to any surface, or to your eye, to avoid contaminating the eye drops. Side effects such as eye pain or irritation, dry eyes, abnormal sensation in the eyes, headache may occur after using Allerpat Eye Drops. These are usually mild and may not be with everyone. It may cause short term blurring of vision when first used. Use caution before driving or using machines. Make sure to use within 4 weeks of opening the bottle.

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The information on Allerpat OD Eye Drops is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.