How long does trimethoprim suspension last once opened?
Question posted by geegee1 on 29 Sep 2009
Last updated on 11 October 2009 by Marvell
The trimethoprim solution in United States is stored at room temperature and will last until the expiry date of the medicine, as issued by the manufacturer. If it was dispensed into another bottle then it'll be hard to know but if you have the original bottle it should have an expiry date on it.
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