If part of the reason you’re breathing through your mouth is because your nose is clogged, use an over-the-counter medicated decongestant nasal spray or drops to open up airways, such as Afrin or Vicks. “Nasal decongestants work well at eliminating congestion in your nose and drying mucus out,” Dr. Abramowitz says. “This can help you feel better and also decrease postnasal drip.”
It’s been used for thousands of years in Asian medicine to treat stomachaches, diarrhea, and nausea, and studies show that it works for nausea and vomiting. There’s some evidence that it might help with menstrual cramps, too. But it’s not necessarily good for everyone. Some people get tummy trouble, heartburn, diarrhea, and gas because of it, and it may affect how some medications work. So talk to your doctor, and use it with care.