Expiry date of prescription eyedrops Atropine 1%
Category: Health > Medicine
Asked by: pkuanko-ga
List Price: $5.00
16 Aug 2006 17:55 PDT
Expires: 15 Sep 2006 17:55 PDT
Question ID: 756818
For most prescription eyedrops, eg. Atropine 1%, there is the warning "Discard bottle 1 month after opening". I am sure that the medication is not going to magically change on the midnight of day 30, so my question is for how many days longer after 1 month can you still use the eyedrops without losing too much of its effectiveness? What is the answer if (a) I have been keeping it in the fridge all the time and (b) I have left it in a humid place of 25 degrees throughout? You can assume that the eyedrops are new, and they have a manufacturer's shelf life of 2 more years.
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Re: Expiry date of prescription eyedrops Atropine 1%
From: stanmartin1952-ga on 17 Aug 2006 00:30 PDT
It probably doesn't lose its effectiveness, but might get stuff growing in it. Once it is opened, it starts to get contaminated, and any preservatives can only do so much.
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