Frequent question: Why do you have to discard eye drops after 4 weeks?

After opening however, the preservative can only ensure the drops are safe for the eye for a period of 28 days. After this, using the drops can cause serious damage to the eye as bacteria may have been introduced. The ingredients themselves will also not be as effective and could be dangerous.

Can I use eye drops after 1 month opening?

Most eye drops are stored in a cool dry place and should not be used longer than one month after the bottle is opened, unless otherwise stated on the label.

What happens if I use eye drops after 4 weeks?

[3] Instructions on eye drop containers usually advise to discard the multi-use eye drops after 4 weeks of opening. At least one study reported no statistically significant difference in rate of contamination between less than 4 weeks and less than eight weeks of use.

Can you keep eye drops longer than 4 weeks?

Patients should not keep their eye drops beyond the printed expiry date. The current policy is that once eye drops have been opened they should be disposed of after 28 days.

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Why should eye drops be discarded after a month?

Eye drops usually expire about one to two years after the manufacturing date. However, once your eye drops are opened, you should throw them away after three months of use, as there is a greater risk of contamination. You should never use eye drops after their expiration date, or after three months of use.

What happens if you use old eye drops?

Using drops past their listed expiration date can lead to irritation, inflammation, and even an eye infection. The chemical compound of eye drops may change and lose potency over time. It is important to discard drops at the proper date to ensure no further usage and keep your eyes safe.

What happens if you don’t refrigerate eye drops?

Why some eye drops need to be refrigerated? Evidence suggests that some ophthalmic medications, such as certain glaucoma medications, may degrade or breakdown if they get too warm or are kept too long at room temperature.

Is it OK to use eye drops after 28 days?

Eye Drops – The 28 Day Rule

After this, using the drops can cause serious damage to the eye as bacteria may have been introduced. The ingredients themselves will also not be as effective and could be dangerous. Always record the date eye drops are opened and do not use them after 28 days.

Do Refresh eye drops expire?

Use before expiration date marked on container. Discard 90 days after opening Store at 59°-86°F (15°-30°C).

How long can you keep eye drops after opening?

All products, once opened, may be used up to the manufacturer’s expiry date unless the manufacturer advises otherwise. Exceptions would be printed on the product packaging and/or on the pharmacy label. We still advise that eye drops are discarded 28 days after opening, unless otherwise stated by the manufacturer.

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What are the signs of an eye infection?

Signs of an Eye Infection

  • Pain in the eye.
  • A feeling that something is in the eye (foreign body sensation).
  • Increased sensitivity to light (photophobia).
  • Yellow, green, bloody, or watery discharge from the eye.
  • Increasing redness of the eye or eyelids.
  • A gray or white sore on the colored part of the eye (iris).

How do you know if eye drops are contaminated?

Placing more than one drop is a waste of the solution; the total capacity of the cul-de-sac is one-sixth of a drop. Avoid touching the dropper to touch the conjunctiva, eyeball, eyelid, or eyelashes. If contact is made, the bottle is considered contaminated and should be thrown away.

How long can you take medicine after the expiration date?

While it’s best only to use non-expired medications, one study conducted by the U.S. military showed that some medications could retain their potency up to one year after the expiration date has passed.

Can I use expired eye drops if unopened?

Although unopened eye drops can go bad after their expiration date, opened ones have most likely been exposed to bacteria. In either case, ophthalmologists always recommend patients to dispose of eye meds that have reached their shelf life.

Do artificial tears expire?

A good practice I would recommend is that once you open a bottle, label it with date of opening, and discard after 3 months even if it’s not finished. So, preservatives allow us to store artificial tears for longer. However, they are known to cause adverse effects on the surface of the eye.

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