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Anti-allergic agents are medications used to treat allergic reactions. Anti-allergic agents have existed since 3000 B.C in countries such as China and Egypt . It was not until 1933 when antihistamines, the first type of anti-allergic agents, were developed. [ 1 ]
A wakefulness-promoting agent (WPA), or wake-promoting agent, is a drug that increases wakefulness and arousal. [1] [2] [3] They are similar to but distinct from psychostimulants, which not only promote wakefulness but also produce other more overt central nervous system effects, such as improved attention span, executive functions, vigilance and motivation.
The medication is delivered chemically by the salt doxylamine succinate and is taken by mouth. Doxylamine and other first-generation antihistamines are the most widely used sleep medications in the world. [6] Typical side effects of doxylamine (at recommended doses) include dizziness, drowsiness, grogginess, and dry mouth, among others. [7] [4]
The long-acting, over-the-counter medication lasts up to 24 hours per dose, according to the Food and Drug Administration (FDA). It reaches peak concentration in your body an hour after you take ...
It is mainly used to treat allergies, insomnia, and symptoms of the common cold. It is also less commonly used for tremors in parkinsonism, and nausea. [11] It is taken by mouth, injected into a vein, injected into a muscle, or applied to the skin. [11] Maximal effect is typically around two hours after a dose, and effects can last for up to ...
Allergy Tablet. Xyzal, a.k.a. levocetirizine, "is the best prescription-strength oral antihistamine," Dr. Li says. It helps with sneezing, a runny or itchy nose or itchy throat, and watery eyes.
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