If you have a scratchy throat, add half a teaspoon of salt to a glass of warm water. The salt helps to reduce inflammation, which helps to prevent the cold from developing by flushing out bacteria and viruses. Keep rinsing as soon as the scratch throat feeling comes back.
Then head to the drugstore. Grab a pain reliever, like acetaminophen, to fight off achiness. Also, over-the-counter allergy medications can help with a runny nose and watery eyes.