Its daytime counterpart is antihistamine free Day Quil, formulated to avoid drowsiness. Ny Quil D contains pseudoephedrine, a decongestant that in some regions (such as the United States) is now placed behind the counters at pharmacy and other retail stores and must be requested by the customer.
Antihistamine syrups are a quick and easy way to relieve any allergy symptoms that you or your family may be experiencing.
Antihistamine solutions often come in a variety of flavours, making them ideal for fussy children or adults that can't swallow tablets. To help you choose, our range of antihistamine syrups have been sorted into non-sedating antihistamines and sedating antihistamines.
However, some people may experience some slight sleepiness, headache, mouth dryness, lightheadedness, vision problems (mainly blurred vision), palpitations and fatigue.
Although the drug was only authorized by the FDA on , it was already available in most European countries.
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 Ny Quil Sinus in 2006, replacing pseudoephedrine with phenylephrine.
It does not prevent the actual release of histamine from mast cells.
The manufacturers claim it to be more effective with fewer side effects than previous second-generation drugs; however, there have been no published studies supporting this assertion.
Antihistamines like Zyrtec and Claritin are designed to calm the histamine reaction your body has when it’s exposed to an allergen.
When your body encounters something it’s allergic to, it sends out white blood cells and goes into fight mode. This substance causes many of the symptoms of an allergic reaction.
For further information and advice, please visit our antihistamines page.