What Are the Three Xanthines?

The three xanthines, caffeine, theophylline and theobromine, occur in plants. They are qualitatively similar but differ markedly in potency: Tea contains caffeine and theophylline.

What are some methylxanthines?

The methylxanthines, theophylline, and dyphylline are used in the treatment of airways obstruction caused by conditions such as asthma, chronic bronchitis, or emphysema. Caffeine (present in coffee) and theobromine (present in chocolate) are also methylxanthines.

What are methylxanthines used for?

Methylxanthines. Methylxanthines are relatively weak bronchodilators that are administered systemically. They have been used for treatment of acute exacerbations as well as for long-term control of asthma symptoms. The most common methylxanthine used for asthma treatment is theophylline.