That medicine cabinet above the sink is one of the worst spots in the house for your pills. UCLA Health says a cool, dry place is best, and in a small bathroom the heat and humidity from hot showers and baths can quickly threaten any medicine stored there.

The problem is common. UCLA Health cites a 2021 study in the journal Innovations in Pharmacy that found only 35% of people store all of their medications appropriately, with moisture, temperature and the risk of accidental exposure for children the most frequent issues. Those conditions can reduce a medicine's potency before its expiration date, and a spot that is not secure can put children and pets at risk.

The kitchen is another popular choice, but UCLA Health says it can also be a poor one if medicine sits near the stove, sink or hot appliances. Better options are out of sight in a dresser drawer, hallway cabinet or storage box, child-proofed if you have kids. Leave medicine in its original container, which protects pills from light and lists the expiration date, but pull out any cotton balls right away, since they attract moisture.

Medicine that is damaged or expired may not work and can grow harmful bacteria, UCLA Health says. If you suspect a medicine has gone bad before its expiration date, take it to your pharmacist. For disposal, flush only medicines on the FDA Flush List, and for the rest, mix them with dirt, coffee grounds or cat litter, seal them in a plastic bag and black out your name on the label. Questions about storing or managing medicine can go to your primary care physician.