I have a few questions concerning the expiration dates of supplements. Does the expiration date on the bottle of a vitamin or supplement, only apply to if the supplement bottle isn't opened yet? I was just curious. Cause there are a few different supplements that I haven't taken for several months, such as Ginkgo Biloba. I'd like to start the supplements back up again, but I wasn't sure if they are still good or not. The bottle says they are good until 2008, but I opened the bottle maybe close to a year ago.
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Supplements can lose potency over time, especially in hot & humid climates. If a supplement dosen't have an expiration date don't buy it. If it has a date and has expired discard it whether it's opened or was never opened. This is why stores sell supplements at large discounts once it nears the expiration date.