Theophylline comes as a tablet, capsule, solution, and syrup to take by mouth. It usually is taken every 6, 8, 12, or 24 hours. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. http://theophylline-online.over-blog.com/2014/01/order-theophylline.html - http://theophylline-online.over-blog.com/2014/01/order-theophylline.html Take theophylline exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.