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Many properly stored, unopened meds may last far beyond their date stamps. In fact, the FDA and the U.S. Department of Defense established a Shelf-Life Extension Program (SLEP) to more

accurately identify how long pharmaceuticals remain effective. One SLEP study found that 88 percent of 122 drugs, stored under ideal conditions, should extend their expiration dates by 5.5

years, on average. Still, experts say your safest bet is to mind the expiration dates in your own medicine cabinet, especially when dealing with more serious ailments, to help ensure that

the drugs work as intended. Past its prime, a medication may lose its strength or even cause unintended side effects, according to the FDA. Plus, once opened, certain products — particularly

things like eye drops, nasal sprays or children's medications that are administered by dosing syringe — are more prone to contamination and may need to be discarded long before their

expiration dates. For example, the American Academy of Ophthalmology suggests tossing eye drops three months after opening, regardless of the date stamp. Plus, those bulk bottles may not

even save you any money. “Stick with generic from a local pharmacy instead or a big-box store like Walmart for the best price,” Woroch says. 4. FLOUR Even if you're still into the

pandemic baking trend, make sure you don't overstock your flour supply. The baking staple does spoil and, past its prime, it can make your baked goods taste bad, though at least

it's not likely to make you sick. Regular all-purpose flour, along with other white flours such as self-rising, white-bread and white-cake flour, has a shelf life of one year at room

temperature and two years if stored in the fridge or freezer, according to Women's Health magazine. Whole-wheat, oat and other whole-grain flours start to turn sooner — within three

months at room temperature and a year in the fridge or freezer. Almond, coconut and other nut flours are also good for only three months at room temperature, and keep in the fridge or

freezer only for six months. 5. COOKING OIL Now that you've been eating at home a whole lot more, you might actually need a bigger bottle of cooking oil. Just be aware that it does

spoil over time, Bodge says. How much time you have depends on the type of oil, and shelf lives vary greatly. For example, olive and vegetable oils are good for three to five months after

opening, according to FoodSafety.gov, while coconut oil can stay fresh for three years. Vegetable oil sprays last up to a year after opening. Unopened bottles of most olive oils can keep up

to two years; extra virgin olive oil has less time, up to 18 months. 6. SPICES A little flavor can go a long way in a dish, but probably not for as long as you think. While properly stored

ground spices can keep for two to three years after opening, according to FoodSafety.gov, experts say they can start losing their flavor much sooner. “So it's important to make sure

that you can use all of that cumin within several months, for example,” Bodge says. 7. CANNED GOODS Don't worry about clearing out your bunker; canned foods really are built to last.

They typically get stamped with a “best by” date that suggests a shelf life of at least two years, but they can retain their safety and nutritional value for far longer. According to the 

Canned Food Alliance, even cans as old as 100 years have been found in shipwrecks and still proven safe to eat. Experts suggest only tossing cans if they're leaking or swollen. In

reality, it's not longevity that argues against buying canned goods in bulk but rather price. Supermarkets frequently discount both store brands and national brands, and those sales can

be combined with manufacturer's coupons for prices that can undercut the per-can cost of a case purchased from a warehouse club. And remember that neither Costco nor Sam's Club

accepts manufacturer's coupons. Then, of course, there's variety. Combining grocery store sales with coupons affords the luxury of mixing up your canned goods instead of committing

to, say, an entire case of lima beans.