1 doctor weighed in:

What happens if I used expired zymar eye drops? Anything bad?

1 doctor weighed in
Dr. Robert Alexander
Surgery - Plastics

In brief: Usually nothing

The expiration date is a recommended timeframe insuring sterility of the vial and full potency.
If kept cool, dark place (drawer etc), then should not be a problem. Issue is that if bacteria grow in the open vial, then possible infection may result, or irritation from gradual chemical breakdown.

In brief: Usually nothing

The expiration date is a recommended timeframe insuring sterility of the vial and full potency.
If kept cool, dark place (drawer etc), then should not be a problem. Issue is that if bacteria grow in the open vial, then possible infection may result, or irritation from gradual chemical breakdown.
Dr. Robert Alexander
Dr. Robert Alexander
Thank
Read more answers from doctors