Pedrox Roxithromycin Theophylline
ModerateRoxithromycin can have a slight effect on theophylline, but studies haven't shown this to cause any real problems in patients. Taking the two together is not known to cause noticeable harm.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.