While an undergraduate Coleridge had begun to take laudanum (an opium derivative then legal and widely used) for his ailments, and he was addicted by about 1800. That year, after having traveled with Wordsworth in Germany, Coleridge moved with his family to Keswick in the Lake District. He continued his studies and writings on philosophy, religion, contemporary affairs, and literature. In 1808 he separated from his wife permanently, and from 1816 until his death he lived in London at the home of Dr. James Gilman, who brought his opium habit under control.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.