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 .
By Michael Perry, M.D. Spondylitis is a spine condition that generally refers to the inflammation and swelling of the vertebrae in the spine. Most physicians use the term âspondylitisâ to refer to a compilation of arthritic spine conditions that cause the joints and vertebrae of the spine to swell.pondylitis is a complex spine condition because it can be caused by certain factors of spinal arthritis, as well as a side effect of a different spine condition or a symptom of certain diseases.