Doxylamine succinate: The ingredient present in all NyQuil formulations is that of doxylamine succinate. Its elimination half-life is approximately 10 hours in healthy adults, meaning that at 10 hours post-ingestion, 50% of the doxylamine within NyQuil will have been eliminated from systemic circulation.
phlegmon (Noun) A solid mass formed by inflamed connective tissue, such as forms around an appendix in appendicitis. Origin: phlegmone, phlegmon, inflammation beneath the skin, from .
1 The appendix is a small, worm-like appendage attached to the colon. 2  Appendicitis occurs when the appendix becomes blocked, and bacteria invade and infect the wall and lumen of the appendix.  The most common complications of appendicitis are rupture, abscess, and peritonitis.