
4 Quin Brom Eyedrops
Entod Pharmaceuticals - 5 ml
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Prescription required
Potassium Iodide (3.3% w/v) + Sodium Chloride (0.83% w/v) + Calcium Chloride (1% w/v)
Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.
Catagon Eye Drops is used for eye disorders.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
Catagon Eye Drops contains Potassium Iodide (3.3% w/v) + Sodium Chloride (0.83% w/v) + Calcium Chloride (1% w/v). It belongs to the Vitamin and mineral supplement and Vitamin D / calcium supplement class of medicines.
Eye disorders
Catagon Eye Drop is a combination of three mineral salts. Altogether, Potassium Iodide, Sodium Chloride, and Calcium Chloride work to improve the eyesight. It is also believed to prevent lenticular opacity (cataract or opacity) and other eye diseases.
For ophthalmic use only. Instil the prescribed number of drops into the affected eye(s) as directed by an eye specialist. Wash hands before use; avoid touching the dropper tip; keep a 5–10 minute gap between different eye drops. Remove contact lenses before instillation and reinsert after at least 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 Catagon Eye Drop, use it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and resume your regular schedule.
An overdose of this medicine can cause vomiting and stomach pain, and with iron can be dangerous, especially in children. It can raise blood calcium dangerously, causing thirst, frequent urination, vomiting, confusion and kidney damage. 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 Catagon 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 CONSULT YOUR DOCTOR |
| Alcohol | No known interaction |
| Driving | Driving CONSULT YOUR DOCTOR |
| Kidney | Kidney |
| Liver | Liver |
| Habit forming | No |
Use only under ophthalmologist advice. Do not use if the solution changes color or becomes cloudy, or if seal is broken. Avoid contaminating the dropper tip. If severe eye pain, worsening redness, vision changes, swelling, rash, or no improvement occurs, seek medical care. Use caution in pregnancy/breastfeeding and in children unless prescribed. If using other eye medicines, separate by 5–10 minutes; ointments should be applied last.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for people with a high blood calcium level, or with certain kidney stones.
If using other ophthalmic medicines (antibiotic/steroid/anti-allergic/lubricant), maintain a 5–10 minute interval; specific drug interactions depend on the active ingredient (unknown).
Store below 25°C in a cool, dry place away from light. Do not freeze. Keep bottle tightly closed. Discard within 4 weeks of opening or as per label.
Catagon Eye Drop is prescribed for the prevention of cataracts. Instill 1 or 2 drops in the affected eye(s) every 3 or 4 hours, or as directed by a physician. Make sure to use it within 4 weeks of opening the bottle. In order to have healthy eyesight, eat a diet rich in green leafy vegetables, eggs, nuts, beans, fish, and citrus fruits. Too much UV exposure increases your chances of cataracts. Wearing the right pair of sunglasses will help protect your eyes from harsh sun rays. Have regular eye checkups at least once a year.

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The information on Catagon 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.