Drug General Information (ID: DDIXYA2PZG)
  Drug Name Doxepin (topical) Drug Info Vilanterol Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antidepressants Bronchodilators
  Structure

 Mechanism of Doxepin (topical)-Vilanterol Interaction (Severity Level: Moderate)
     Additive hypertensive effects Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Doxepin (topical) Vilanterol
      Mechanism 1 Hypertensive effects Hypertensive effects
      Key Mechanism Factor 1
Factor Name Hypertensive effects
Factor Description Hypertension is defined as a blood pressure reading above a prescribed limit (130/90 mmHg). Most people with hypertension have no signs or symptoms; others may experience: severe headache, shortness of breath, nosebleeds, severe anxiety, and feeling a tingling sensation in the neck or head.
      Mechanism Description
  • Additive hypertensive effects by the combination of Doxepin (topical) and Vilanterol 
     Increased risk of ventricular arrhythmias Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Doxepin (topical) Vilanterol
      Mechanism 2 Cardiac arrhythmias Cardiac arrhythmias
      Key Mechanism Factor 2
Factor Name Ventricular arrhythmias
Factor Description Ventricular arrhythmias are abnormal heart rhythms that cause your heart's lower chambers to pump blood instead of pumping it. This can limit or stop your heart from supplying blood to your body. While some of these arrhythmias are harmless and do not cause symptoms, others can have serious, even fatal, effects on your body.
      Mechanism Description
  • Increased risk of ventricular arrhythmias by the combination of Doxepin (topical) and Vilanterol 

Recommended Action
      Management Caution is advised if beta-2 agonists are used with TCAs, or within two weeks of discontinuing the latter. Cardiovascular status should be closely monitored.

References
1 Product Information. Arcapta Neohaler (indacaterol). Novartis Pharmaceuticals, East Hanover, NJ.
2 Product Information. Foradil (formoterol) Novartis Pharmaceuticals, East Hanover, NJ.
3 Product Information. Maxair (pirbuterol). 3M Pharmaceuticals, St. Paul, MN.