Drug General Information (ID: DDIQ7INPSO)
  Drug Name Diltiazem Drug Info Levobetaxolol (ophthalmic) Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antihypertensive Agents Cardiotonic Agents
  Structure

 Mechanism of Diltiazem-Levobetaxolol (ophthalmic) Interaction (Severity Level: Major)
     Increased risk of cardiac depression Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Diltiazem Levobetaxolol (ophthalmic)
      Mechanism Cardiac depressant effects Cardiac depressant effects
      Key Mechanism Factor 1
Factor Name Cardiac depression
Factor Description Cardiac depression may manifest as negative heart rate, negative conduction, and negative contractility. Symptoms include: excessive or more than normal sleep, irritability, loss of interest in activities, and fatigue.
      Mechanism Description
  • Increased risk of cardiac depression by the combination of Diltiazem and Levobetaxolol (ophthalmic) 

Recommended Action
      Management Close clinical monitoring of patient hemodynamic response and tolerance is recommended if these agents are used together, and the dosage of one or both agents adjusted as necessary. Patients should be advised to promptly report any symptoms including fatigue, headache, fainting, swelling of the extremities, weight gain, shortness of breath, chest pain, increased or decreased heartbeat, or irregular heartbeat.

References
1 Packer M "Combined beta-adrenergic and calcium-entry blockage in angina pectoris." N Engl J Med 320 (1989): 709-18. [PMID: 2564164]
2 Product Information. Covera-HS (verapamil). Searle, Skokie, IL.
3 Rocha P, Guerret M, David D, Marchand X, Kahn JC "Kinetics and hemodynamic effects of intravenous nicardipine modified by previous propranolol oral treatment." Cardiovasc Drugs Ther 4 (1990): 1525-32. [PMID: 2081146]