This combination medication is used to temporarily treat symptoms caused by the common cold, flu, allergies, or other breathing illnesses (such as sinusitis, bronchitis). Dextromethorphan is a cough suppressant that affects a certain part of the brain, reducing the urge to cough.

VICKS NYQUIL SEVERE COLD AND FLU- acetaminophen, phenylephrine hydrochloride, dextromethorphan hydrobromide, and doxylamine succinate capsule, liquid filled.

NyQuil can cause you to feel very drowsy or sleepy and you may fall asleep after taking it. Be careful when driving or operating machinery if you have taken this product. Avoid drinking alcoholic beverages with NyQuil. Alcohol, sedatives and tranquilizers can increase drowsiness when used with NyQuil.

NyQuil is not designed to be taken as a sleep aid, or for any purpose besides relieving cold or flu symptoms. Although doxylamine is an approved sleep aid when sold on its own, this sleep-inducing ingredient should generally not be used for more than two weeks.

NyQuil can cause you to feel very drowsy or sleepy and you may fall asleep after taking it. Be careful when driving or operating machinery if you have taken this product. Avoid drinking alcoholic beverages with NyQuil. Alcohol, sedatives and tranquilizers can increase drowsiness when used with NyQuil.

NyQuil SEVERE is an over-the-counter medication that treats symptoms of cold and flu such as sneezing, sore throat, headache, minor aches and pains, fever, runny nose, and cough so you can sleep at night.

"When used as directed, NyQuil does not present substantial risks, even with repeated use," he says. But, he adds, better stop using it for sleep-inducing purposes. "...it is not a good idea to rely on a medication for sleep for an extended period. There are natural ways to improve sleep."

How long does Nyquil's drowsiness last? Nyquil's active ingredient, doxylamine, which has antihistamine and sedating effects, can lead to sleepiness. Nyquil can cause different degrees of sleepiness, depending on the individual lasting anywhere from 4 to 6 hours on average.

NyQuil is not designed to be taken as a sleep aid, or for any purpose besides relieving cold or flu symptoms. Although doxylamine is an approved sleep aid when sold on its own, this sleep-inducing ingredient should generally not be used for more than two weeks.

Should You Take Nyquil for Sleep? NyQuil is not designed to be taken as a sleep aid, or for any purpose besides relieving cold or flu symptoms. Although doxylamine is an approved sleep aid when sold on its own, this sleep-inducing ingredient should generally not be used for more than two weeks.

Is it bad to take NyQuil to sleep? You should only use NyQuil as directed on the label. NyQuil is used to treat the symptoms of the cold and flu and not as a sleeping agent for insomnia. However, it can help you feel better if you have a cold or flu because it can treat your symptoms which will help you rest easier.

NyQuil can cause you to feel very drowsy or sleepy and you may fall asleep after taking it. Be careful when driving or operating machinery if you have taken this product. Avoid drinking alcoholic beverages with NyQuil. Alcohol, sedatives and tranquilizers can increase drowsiness when used with NyQuil.