And if you're self-treating a cold, be sure to carefully read and follow product instructions and only treat the symptoms you have.
See the directions on the box for the correct dosage for adults and children. In cases of overdose, get emergency medical help or call Poison Control at It's important to get immediate medical care, even if you don't notice any symptoms yet.
Looking to avoid getting the flu? Our free guide has everything you need to stay healthy this season. Sign up and get yours today. Dextromethorphan: a case study on addressing abuse of a safe and effective drug. Subst Abuse Treat Prev Policy. Acetaminophen-induced hepatotoxicity: A comprehensive update. J Clin Transl Hepatol. Over-the-counter medications: Update on cough and cold preparations. Pediatr Rev. Food and Drug Administration. When to give kids medicine for coughs and colds.
Updated November 27, Antoniou T, Juurlink DN. Dextromethorphan abuse. Dextromethorphan in cough syrup: The poor man's psychosis. Psychopharmacol Bull. National Library of Medicine. Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. These choices will be signaled globally to our partners and will not affect browsing data.
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Accidental Causes. Signs of Overdose. Vicks also manufactures and sells DayQuil, a similar medication for users who want to relieve cold symptoms without feeling drowsy during the workday.
DayQuil alleviates the same symptoms as NyQuil. DayQuil contains acetaminophen and dextromethorphan, but it does not contain doxylamine. Instead, DayQuil contains phenylephrine, a non-drowsy nasal decongestant. Learn More. The most common side-effects of NyQuil, if any occur, are minor and do not require medical attention. NyQuil is not dangerous if it used properly. The most likely side-effects are:. It is important that people who use NyQuil follow the instructions on the bottle and avoid taking too much.
Someone who regularly takes too much NyQuil could lose consciousness or suffer liver damage from the acetaminophen. Additionally, people should abstain from drinking alcohol while taking NyQuil and they should also avoid taking it together with an antidepressant or another medication which contains acetaminophen.
Moreover, it is possible for someone to have an allergic reaction to NyQuil. The symptoms of an allergic reaction to NyQuil include rash, hives, itchiness, difficulty with swallowing and breathing, and swelling in the face, throat, and mouth. A person who uses NyQuil correctly almost certainly will not become addicted, but someone who misuses NyQuil may develop dependence on the medication.
Someone can misuse NyQuil by taking too much of it or by taking it for the wrong reasons, such as to treat asthma or chronic bronchitis, or for recreation. NyQuil is only designed to treat short-term symptoms, not cure long-term health problems. NyQuil is not a cure for insomnia and it should not be used just to fall asleep. When a person starts to experience withdrawal symptoms when they put NyQuil back in the medicine cabinet, NyQuil dependence has escalated into NyQuil addiction.
Physical withdrawal symptoms most often characterize addictions to alcohol, opioids , and dangerous stimulants like cocaine and methamphetamine , but addictions to common medications can cause withdrawal symptoms as well. The symptoms of NyQuil withdrawal include:. When someone has a NyQuil addiction, the symptoms of withdrawal might prevent them from achieving recovery. Fortunately, people can manage withdrawal symptoms more easily with medical support, and someone with serious dependence on NyQuil or other drugs can escape the cycle of withdrawal and relapse by undergoing medically-supervised detox and therapy at a rehab facility.
Make a Call DXM is an ingredient in over 70 medications. In small doses, DXM is just a cough suppressant which does not pose any risks for serious side effects.
DXM is not even a controlled substance. However, DXM does affect the brain. For this reason, excessive amounts of DXM can bring about hallucinations and euphoria. There are many Nyquil products to choose from, most of which can cause sleepiness.
Nyquil products may contain several or all of the active ingredients listed below at varying doses. Nyquil Severe products tend to contain additional ingredients. Acetaminophen is a common pain reliever. It targets symptoms such as minor aches and pains, fever , headache, and sore throat. It carries a low risk of side effects when taken at the recommended dosage. However, higher doses of acetaminophen can be dangerous. If you take more acetaminophen than is safe for you, it can cause liver damage.
The recommended maximum daily dose of acetaminophen is 3, milligrams mg. But the difference between a safe dose and a dose that could harm your liver is very small. Acetaminophen is sold under many brand names, including Tylenol. Dextromethorphan is a cough suppressant.
It works by reducing brain signals that trigger coughing. Doxylamine succinate is an antihistamine. Antihistamines work by blocking the action of histamine, a substance associated with allergy symptoms. By targeting histamine, doxylamine succinate helps relieve sneezing, runny nose, and sinus congestion.
It causes significant drowsiness, as well as headaches and sinus dryness. Phenylephrine HCl is a decongestant. It relieves symptoms associated with sinus congestion, such as a runny nose. Other side effects include dizziness, headache, and upset stomach.
Some studies have examined the use of antihistamines to help with sleep. According to a literature review , some first-generation antihistamines may be helpful in treating short-term insomnia.
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