Which of the following is considered a xanthine?
a. Acetylcysteine
b. Guaifenesin
c. Theophylline
d. Epinephrine HCL

Respuesta :

The answer is C. theophylline. Xanthine is a kind of purine base found in many human body tissues and fluids and in other organisms. Theophylline is a kind of methylated xanthine.