Drugs aren't dangerous if taken after expiration date. A lot of prescription drugs have a really long shelf life even after the expiration date, but the effectiveness of the prescription will decrease as time goes by after the expiration date.
A check is typically good for six months before it expires.
StarSan is typically good for about 1-2 years before it expires.
Yeast is typically good for about 1-2 years before it expires, as long as it is stored in a cool, dry place.
An Ancestry DNA kit is typically good for about a year before it expires.
Masa is typically good for about 3-6 months before it expires, depending on how it is stored.
Active dry yeast is typically good for about 2 years before it expires.
Pizza dough is typically good for about 1-2 days in the refrigerator before it expires.
Simple syrup is typically good for about one month when stored in the refrigerator before it expires.
Nutritional yeast is typically good for about 1-2 years before it expires, as long as it is stored in a cool, dry place.
Elderberry syrup typically lasts for about 1 year before it expires.
Lactaid milk is typically good for about 7-10 days after the sell-by date before it expires.
Coconut milk is usually good for about 7-10 days in the fridge before it expires.