NyQuil
Vicks NyQuil is a brand of over-the-counter medication manufactured by Procter & Gamble intended for the relief of various symptoms of the common cold. All medications within the NyQuil imprint contain sedating antihistamines; they are intended to be taken before sleep. Its daytime counterpart is antihistamine-free DayQuil, formulated to avoid drowsiness. NyQuil is also used as a sleep aid. NyQuil was first marketed in the United States in 1966.
Products
NyQuil Cold/Flu Multisymptom Relief
The liquid version of NyQuil Cold/Flu Multi-symptom Relief, available in syrup and LiquidCap form. The recommended adult dose contains:The LiquiCap capsule version has the following active ingredients per pill, half the recommended adult dose:
The liquid version of NyQuil SEVERE Cold/Flu Multi-symptom Relief, available in syrup and LiquidCap form. The recommended adult dose contains:
- Acetaminophen
- Dextromethorphan
- Doxylamine succinate
- Phenylephrine
- Acetaminophen
- Dextromethorphan
- Doxylamine succinate
- Phenylephrine
NyQuil D
NyQuil D contains pseudoephedrine, a decongestant that in some regions is now placed behind the counters at pharmacy and other retail stores and must be requested by the customer. It contains the following active ingredients :NyQuil Cough
Nyquil Cough contains a cough suppressant and antihistamine but no painkiller. Its active ingredients are:NyQuil Sinus
Nyquil Sinus's active ingredients are:Nyquil Sinus is available as LiquiCaps only.
ZzzQuil
ZzzQuil is a sleep aid, and is not a treatment for pain or cold/flu symptoms. Its active ingredient is:Children's NyQuil
Children's NyQuil is artificially flavored for easier consumption by children and contains no alcohol. It is available in the syrup form only. Its active ingredients are:Reformulation
Until 2006, NyQuil Cold/Flu Multisymptom Relief and NyQuil Sinus contained pseudoephedrine, a nasal decongestant that also formed the active ingredient in Sudafed. Following the passage of the Combat Methamphetamine Epidemic Act in 2006, in the United States all pseudoephedrine-containing medications must be kept behind a pharmacy counter and all purchases must be logged.Vicks chose to reformulate NyQuil Sinus in 2006, replacing pseudoephedrine with phenylephrine. However, studies have shown that phenylephrine is no more effective than a placebo. As of 2012, the only NyQuil variety which contains pseudoephedrine is Nyquil D.