Theophylline Anhydrous has 39 known drug interactions based on U.S. FDA drug labeling data. Notable interactions include combinations with Adenosine, Cimetidine, Erythromycin. Patients taking Theophylline Anhydrous should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.
- Total
- 39
- Moderate
- 4
Moderate (4)
- Theophylline Anhydrous + Adenosine— Theophylline blocks adenosine receptors, requiring higher doses of adenosine to achieve therapeutic effect.
- Theophylline Anhydrous + Cimetidine— Cimetidine inhibits theophylline clearance, resulting in increased serum theophylline concentrations. Smaller theophylli…
- Theophylline Anhydrous + Erythromycin— Erythromycin inhibits theophylline clearance, resulting in increased serum theophylline concentrations. Smaller theophyl…
- Theophylline Anhydrous + Rifampin— Rifampin enhances theophylline clearance, resulting in decreased serum theophylline concentrations. Larger theophylline …