Vicks NyQuil is a brand of over the counter medication intended for the relief of various symptoms of the common cold. Because all of the medications within the NyQuil imprint contain sedating antihistamines, hypnotics, or alcohol, they are intended to be taken before sleep. Its daytime counterpart is DayQuil, which does not contain sedating antihistamines and is intended not to induce drowsiness. Both NyQuil and DayQuil are manufactured by Procter & Gamble. NyQuil is formulated as either liquid or capsules (LiquiCaps). The liquid form was test marketed in 1966 and finally widely introduced in the fall of 1968 (with numerous magazine ads and television commercials), and the capsules were introduced in the late 1980s. The product's slogans have traditionally described the product as "The nighttime, sniffling, sneezing, coughing, aching, best-sleep-you-ever-got-with-a-cold medicine", where the list is slightly tailored to the particular formulation being offered.
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