Different Forms of Theophylline. There are many different theophylline products available, and most are not equivalent to each other. There are short-acting and long-acting tablets and capsules, as well as a theophylline elixir. An injectable form of the medication is also available.Along with many different generic theophylline products, the following brand-name theophylline medications are also available:ifferent Forms of Theophylline. There are many different theophylline products available, and most are not equivalent to each other. There are short-acting and long-acting tablets and capsules, as well as a theophylline elixir. An injectable form of the medication is also available.
1 Î· ring (eta) â Has components that resemble the delta ring. 2  It was evident during the plane-crossing event in 2007 when the Î· ring became the 2nd brightest ring. 3  Î± and Î² rings (alpha and beta) â These two rings are second only to the Îµ ring in terms of brightness.
Like the other gas planets, Uranus has rings. Like Jupiter's, they are very dark but like Saturn's they are composed of fairly large particles ranging up to 10 meters in diameter in addition to fine dust. There are 13 known rings, all very faint; the brightest is known as the Epsilon ring.