Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Promoted
2 Answers
Relevance
- ?Lv 76 years agoFavorite Answer
3 - 7 days.
You can shorten a cold by ramping up your immune system. Take 5,000 -10,000mg of Vitamin C per day.
- SkyeLv 66 years ago
Totally depends on the cold and the person and anything else. I've had colds that dwindled off and left a really annoying residual cough for a week, and colds that lasted 24 hours. If it's been 5 days with no improvement at all, I'd call a doctor.
Still have questions? Get your answers by asking now.