With a splitting headache you reach into your medicine cabinet for some aspirin only to find the stamped expiration date on the bottle has passed - two years ago. So, do you take it or don't you? If you decide to take the aspirin will it be a fatal mistake or will you simply continue to suffer from the headache?

This is a dilemma many people face in some way or another. A column published in Pyschopharmacology Today offers some advice.

It turns out that the expiration date on a drug does stand for something, but probably not what you think it does. Since a law was passed in 1979, drug manufacturers are required to stamp an expiration date on their products. This is the date at which the manufacturer can still guarantee the full potency and safety of the drug.

Most of what is known about drug expiration dates comes from a study conducted by the Food and Drug Administration at the request of the military. With a large and expensive stockpile of drugs, the military faced tossing out and replacing its drugs every few years. What they found from the study is 90% of more than 100 drugs, both prescription and over-the-counter, were perfectly good to use even 15 years after the expiration date.

So the expiration date doesn't really indicate a point at which the medication is no longer effective or has become unsafe to use. Medical authorities state expired drugs are safe to take, even those that expired years ago. A rare exception to this may be tetracycline, but the report on this is controversial among researchers. It's true the effectiveness of a drug may decrease over time, but much of the original potency still remains even a decade after the expiration date. Excluding nitroglycerin, insulin, and liquid antibiotics, most medications are as long-lasting as the ones tested by the military. Placing a medication in a cool place, such as a refrigerator, will help a drug remain potent for many years.

Is the expiration date a marketing ploy by drug manufacturers, to keep you restocking your medicine cabinet and their pockets regularly? You can look at it that way. Or you can also look at it this way: The expiration dates are very conservative to ensure you get everything you paid for. And, really, if a drug manufacturer had to do expiration-date testing for longer periods it would slow their ability to bring you new and improved formulations.

The next time you face the drug expiration date dilemma, consider what you've learned here. If the expiration date passed a few years ago and it's important that your drug is absolutely 100% effective, you might want to consider buying a new bottle. And if you have any questions about the safety or effectiveness of any drug, ask your pharmacist. He or she is a great resource when it comes to getting more information about your medications.

Found online at https://www.health.harvard.edu/fhg/updates/update1103a.shtml

That's really interesting. I wonder if there is a better way to keep track of a drug's potency overtime. I do know that things like asparin and excederin tend to get a faint vinegar smell as they age and become less potent.

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If it's in your pack, but you don't know how to use it...it's useless. So, always test your skills as a form of preparation...Don't wait until your life depends on it. That's a lesson you don't want to learn the hard way.

That's good information to know. Thanks.

I know i am new but you happen to have a topic i am familiar with(i am a pharmacist). Everything that was posted is true, any antibiotic that ends in -cycline or -acin should not be used after the expiration date (not sure how controversial that is but it sure is what i was taught). Yes drugs will still be "effective" after expiration dates for up to 5 years, but then start losing potency so fast that they can't be counted on to work. If it is all you have though, try doubling up to make up for the decrease in potency. Refrigeration is a fine idea but be sure the container is airtight, most medicines (especially capsules) can absorb any odor in the refrigerator-pickle flavored diarrhea medicine isn't very appetizing!LOL

Thanks for confirming this info. Glad to have a pharmacist as part of the forum.

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If it's in your pack, but you don't know how to use it...it's useless. So, always test your skills as a form of preparation...Don't wait until your life depends on it. That's a lesson you don't want to learn the hard way.

thanks, look like a good site. i am barely computer literate so if i screw something up ya'll just let me know. i am not trying to step on anyones toes but i will contribute my little knowledge if it will help.