Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Vitamins--Is an unopened bottle of vitamins that are 1 yr. past the "best by" date any good?
1 Answer
- WillowLv 510 years agoFavorite Answer
They probably lost some of their potency, so if you want the full benefits of a vitamin, it'll be best to purchase a new bottle.
Things that affect potency along with age of the vitamins are:
- Storage conditions; storing it in a hot or humid environment (like bathrooms) degrade them faster.
- Opened versus unopened. Since yours are unopened, they should have more potency than if they had the seal broken.
- Light. If the bottle isn't opaque and lots of light gets inside, then they can lose potency. Most vitamins that are light sensitive are in opaque bottles, but lots are in clear but dark bottles. If they're old, even the dark bottles still allow light in, so over time, potency can decrease.
