The federal personal income tax that is administered by the Internal Revenue Service (IRS) is the largest source of revenue for the U.S. federal government.
Benadryl Cream. BenadrylÂ® (diphenhydramine hydrochloride) is an antihistamine medication that comes in various forms and is available both by prescription and over the counter. It is approved for a number of uses, depending on the particular product, including the treatment of allergy symptoms, insomnia, and dermatographism (a severe form of hives).
Diphenhydramine Hydrochloride (BenadrylÂ®) Pharmacologic properties: Diphenhydramine is a histamine H1-receptor antagonist that prevents the release of histamine from effector mast cells. Histamine is a vasoactive substance central to allergic reactions that induces vasodilation, vascular permeability, and bronchoconstriction.