Manufacturers generally mark expiration dates on aspirin bottles for two or three years after packaging, but studies have shown that aspirin retains 100 percent potency after four years or even longer. Storing aspirin in cool, dark locations such as a closet shelf keeps the aspirin potent longer.
Manufacturers are required to publish a shelf life that guarantees at least 90 percent potency of the drug. Many people store aspirin and other drugs in their bathrooms, an environment that is higher in humidity than the rest of the house. A humid environment saps many drugs of their potency, which often reduces shelf life significantly.Learn More
The shelf life for Naproxen tablets is three years from the manufacturing date. Ideal storage conditions include a dry, dark place at temperatures below 77 degrees Fahrenheit. Naproxen tablets generally come in polypropylene containers, according to electronic Medicines Compendium, or eMC.Full Answer >
The shelf life of cephalexin capsules and tablets is three years when stored correctly, according to the electronic Medicines Compendium. The storage containers must remain tightly closed and must be stored at temperatures below 86 F.Full Answer >
The shelf-life of oxycodone is three years if it is stored correctly at 25 degrees C or below. After three years, its potency is likely to diminish, but it may remain effective. Oxycodone is generally used as a painkiller and is absorbed quickly into the blood.Full Answer >
Olive oil has a shelf life of two to three years when properly stored in a pantry. It does not matter if the olive oil is opened or unopened.Full Answer >