Found this recently on the Internet. I can personally attest to some of these so I will defer that the rest are useful as well.

Jerry Karwacki

POST SURGEON

Helpful Hints

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Drinking two glasses of Gatorade can relieve headache pain almost
immediately – without the unpleasant side effects caused by traditional
pain relievers
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Did you know that Colgate toothpaste makes an excellent salve for burns.
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Before you head to the drugstore for a high-priced inhaler filled with
mysterious chemicals, try chewing on a couple of curiously strong
Altoids peppermints. They'll clear up your stuffed nose.
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Achy muscles from a bout of the flu? Mix 1 Tablespoon of horseradish in 1/2 cup of olive oil. Let the mixture sit for 30 minutes, then apply it
as a massage oil, for instant relief for aching muscles.
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Nail polish remover can help to lessen the itch of mosquito bites. Just dab a bit on the bite and rub it in. It can also help to stop the spread of ‘fever blisters’ on the lips (really a virus). Again, just use a cotton swab to dab it on.
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Sore Throat?? Just mix 1/4 cup of vinegar with 1/4 cup of honey and take1 Tablespoon six times a day. The vinegar kills the bacteria.
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Cure urinary tract infections with alka-seltzer. Just dissolve two
tablets in a glass of water and drink it at the onset of the symptoms.
Alka-Seltzer begins eliminating urinary tract infections almost
instantly-even though the product was never been advertised for this
use.
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Eliminate puffiness under your eyes... All you need is a dab of
Preparation H, carefully rubbed into the skin, avoiding the eyes. The
hemorrhoid ointment acts as a vasoconstrictor, relieving the swelling
instantly.
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Honey remedy for Skin Blemishes... Cover the blemish with a dab of honey and place a band-aid over it. Honey kills the bacteria, keeps the skin, sterile, and speeds healing. Works overnight.
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Listerine therapy for toenail fungus... Get rid of unsightly toenail fungus by soaking your toes in Listerine mouthwash. The powerful antiseptic leaves your toenails looking healthy again.
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Smart splinter remover... just pour a drop of Elmers Glue-all over the splinter, let dry, and peel the dried glue off the skin. The splinter sticks to the dried glue.
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Tomato paste boil cure... Cover the boil with tomato paste as a compress. The acids from the tomatoes soothe the pain and bring the boil to a head.
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Balm for broken blisters... To disinfect a broken blister, dab on a few drops of Listerine....a powerful antiseptic.
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Vinegar to heal bruises... Soak a cotton ball in white vinegar and apply it to the bruise for 1 hour. The vinegar reduces the blueness and speeds up the healing process.
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Quaker Oats for fast pain relief... It's not for breakfast anymore! Mix 2 cups of Quaker Oats and 1 cup of water in a bowl and warm in the microwave for 1 minute, cool slightly, and apply the mixture to your hands for soothing relief from arthritis pain.