Photograph of Theophylline under the microscope.

Theophylline is an antiasthmatic and bronchodilator that is marketed under 50 brand names in both the United States and Canada. This drug and it's close relatives are used to treat bronchial asthma, chronic bronchitis, and emphysema. It is also used in combination therapy of cystic fibrosis, and can help to decrease excessive production of red blood cells in kidney transplant patients. Theophylline works by inhibiting the enzyme phosphodiesterase thus producing an increase in intracellular cyclic AMP, causing a relaxation of muscles in the bronchial tubes and blood vessels of the lungs. Side effects include heartburn, vomiting, hives, and skin rash.

© 1995-2022 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Monday, Jul 02, 2018 at 04:22 PM
Access Count Since April 15, 1997: 40309