I have found various shelf life indications claiming from 2 to 3 years.
(http://www.medsafe.govt.nz/profs/datasheet/b/brufentab.htm)
One must also remember that a shelf life is an acceptable compromise by companies of two factors: 1. Efficacity of the product over time, and 2. protection from legal action by disavowing any complications or inefficacity after a set date. Thus the real shelf life is usually longer than claimed.
Bayer won't tell. If they did, it would mean that people with some "Old" pills would be able to use them and then Bayer would not be able to sell new pills instead. Nothing personal here, it's just 'business'. Ask Bayer and see what a run-around you'll get. Something like "Our research has not yet determined (and may never) when the real 'best before date' is. The package date is our best guess so far. Stay tuned".
After the bottle is opened about 6 months.
just look on the bottle for expiration date
It will generally last up to 2 years if kept closed and away from sunlight and moisture ..................
Aspirin can last 4 years!
Look on the Bottle/Box.
36 months
Yes, DNA does have a shelf life. It has a shelf life of about four years if it is properly preserved.
Whar is the shelf life of the " Idioms "
The shelf life of Chloramphenicol when it is unopened is 24 months. The shelf life when it's opened is 28 days.
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The shelf life of unopened petroleum jelly is around 3 years.
when its empty !
it has a shelf life of 9 months