What drugs become dangerous after their expiration date

I routinely discard expired OTC medicine because it’s just easier to replace.

I just looked up the dates on some the other products I sporadically use:

The expiration date on the petroleum jelly was 2010.

The expiration date on the mint mouthwash was September 2004. According to the bottle it is 21.6% alcohol.

The expiration date on the pure cornstarch baby powder is August 2003.

I used a little of each today. They all smelled fine and seem to be as good as the day I bought them.

Petroleum jelly’s primary medicinal use is as a moisture barrier, so it should be usable as long as it maintains its consistency.