Originally Posted by Sarahstw
I have tinctures that I use with great results that are easily 5+ years old. Alcohol-based tinctures, that is (rather than glycerin or vinegar). They are remarkably stable unless you leave them in the sun and/or leave the lid off of them - not that I've ever done that
Unless they look funny - strange sediment or whatever I wouldn't even consider worrying about them for a few years.