Shelf life of tinctures

I’ve got 2 full bottles of herbal tincture that I purchased in 2020. Are they expired? I don’t want to empty them down the drain. If they’re still good I’d like to give them away to someone, will probably post it on Craigslist or something.

I was studying to become a clinical herbalist(before I got incredibly sick again), and I can say that if the tinctures have been kept away from direct sunlight and heat, they can be good, effective remedies for 10 years... some longer.

If they have been opened, you can take the lid off and smell them. That will tell you immediately if they are good or not. Also, any presence of mold means to get rid of them.