Android is a mobile operating system developed by Google, and backed by an industry consortium known as the Open Handset Alliance. It is an open source platform with optional proprietary components, including a suite of flagship software for Google services, and the application and content storefront Google Play.
This reaction is partly caused by the release of histamine from certain cells in the body. Xyzal is an antihistamine, which means it blocks histamine from binding to histamine receptors and causing allergy symptoms. Because histamine is responsible for many of the symptoms of allergies, blocking it can be helpful.
FDA approval for Xyzal in the treatment of urticaria was based on the results of two multi-center, randomized, placebo-controlled, double-blind clinical trials. The two trials enrolled a total of 423 subjects aged 18 to 85 years. The trials included one 4-week dose ranging trial and one 4-week single-dose level trial.