Does Theophylline Interact with Riociguat?
Theophylline and Riociguat have a contraindicated drug interaction according to U.S. FDA drug labeling data. Co-administration with theophylline is contraindicated because of hypotension. The mechanism involves nonspecific pde inhibitor interaction causing hypotension. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.
- Severity
- Contraindicated
- Theophylline Class
- Methylxanthine
- Riociguat Class
- Soluble Guanylate Cyclase Stimulator
- Management
- Do not take together
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Theophylline and Riociguat occurs because nonspecific pde inhibitor interaction causing hypotension. Clinically, this means co-administration with theophylline is contraindicated because of hypotension. Because of the severity of this interaction, these medications are contraindicated — meaning they should not be taken together under any circumstances. If you are currently taking both, contact your healthcare provider immediately to discuss alternatives.
What To Tell Your Doctor or Pharmacist
If you are taking Theophylline and your doctor is considering prescribing Riociguat (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask about alternative medications that do not interact with your current regimen
- Ask how frequently you should be monitored while these are co-prescribed
- Never stop or change either medication without first consulting your healthcare provider