Our Members Asked:
I recently bought a CoQ10 supplement on Amazon. The manufacture date was hidden under a sticker, but was 13 months ago. No "Best By" date is listed. Is this product still good to use?
While it's hard to know if covering that date was intentional or not, by listing only a date of manufacture, the manufacturer is avoiding a claim regarding shelf life. This is allowed -- since listing a Best By or expiration date is voluntary -- but it would be better to choose a product that lists a Best By date, as it represents that the manufacturer has stability data to back-up that date. Most supplements that are maintained properly (unopened, out of excessive heat and light) should be fine for at least 2 years. However, since it may take you a few months to use up the pills in your CoQ10 bottle, it would seem best for you to return it and ask for a more recently-manufactured product.
See ConsumerLab.com's Review of CoQ10 and Ubiquinol Supplements for more about choosing a CoQ10 supplement, and our Top Picks among products.