I have looked everywhere and only have gotten expiration date of Timolol Maleate not patency of eye drops once opened in the UK... they say good only for 4 weeks once opened in multidose container... have e-mailed the company and my Pharmacist said it is good for 3 months... but unable to verify this info... waiting for MD from this site to answer my question as I asked and submitted pay pal payment don't know when I will get my answer... can anyone help with this question not in the leaflet that comes with the eye drops... Thank you
How long does the potency of Timolol Maleate Opthalmic eye drops last once you open the container?
Question posted by janiceswg on 16 June 2013
Last updated on 18 June 2013
I will see if I can find something written for you. I worked in an ophthalmologists office and surgical center for years as an ophthalmic RN and we kept drops, once opened, for 30 days only (which would fall in with the 4weeks that you found documented). This wasnt because they were no longer potent or that the strength changes-evaporation shouldnt happen that fast if you are only having the cap off long enough to give the drop. It is because of the possibility of bacterial contamination that we tossed them for a new bottle. This was our office/surgical suite policy. I will look at some of my resources to see if I can find something written so that you can see it in "black and white".
If you're waiting for an MD to answer here, you may have a long wait, this is a community support group. What did you pay for? I hope you weren't gullible enough to pay to ask a question. The drug will have the same strength up to the expiration date on the bottle. The reason we don't use it for more then 3 mos after opening is because of the chance of contamination.
Don't play doctor with yourself and self medicate especially since you are dealing with glaucoma.
Throw away the eye drops you have and make an appointment with an eye doctor asap!
- Timolol uses and safety info
- Timolol prescribing info & package insert (for Health Professionals)
- Side effects of Timolol (detailed)
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