Supplementary Materials

Table S1. The significant drug pairs in potential DDIs examined by the two databases.

Micromedex Drugs.com List of drugs paired PK-PD Mechanism details 1. — PD Additive QT-interval prolongation 2. Amiodarone— PK CYP3A inhibition by Ketoconazole 3. — PD Additive QT-interval prolongation Dronedarone 4. Cyclosporine— PK CYP3A inhibition by Cyclosporine Dronedarone 5. Dronedarone— PK CYP3A inhibition by Erythromycin 6. Dronedarone— PD Additive QT-interval prolongation 7. Dronedarone— PK CYP3A4 inhibition by Itraconazole 8. Dronedarone— PK Contraindication Major CYP3A inhibition by Ketoconazole Ketoconazole 9. Dronedarone— PD Additive QT-interval prolongation PD 10. Dronedarone— Additive QT-interval prolongation

11. — PK CYP3A inhibition by Itraconazole Itraconazole 12. Felodipine— PK CYP3A inhibition by Ketoconazole Ketoconazole 13. Itraconazole— PK CYP3A inhibition by Itraconazole 14. Ketoconazole— PK CYP3A inhibition by Ketoconazole Nisoldipine 15. Praziquantel— PK CYP induction by Rifampin Rifampin PD 1. Additive or synergistic toxicity

2. Aminophylline— Decreased clearance of PK Ciprofloxacin by Ciprofloxacin 3. Aminophylline— PK Decreased hepatic 4. Amiodarone— PD Additive effects on QT interval Ciprofloxacin 5. Amiodarone— PK P-glycoprotein inhibition by Amiodarone 6. Amiodarone— PD, PK Major Major Additive effects on QT Erythromycin prolongation, CYP3A inhibition by

Erythromycin

7. Amiodarone— PD, PK Flecainide Antiarrhythmic inhibition by Amiodarone, CYP2D inhibition by Amiodarone

8. Amiodarone— PK CYP3A inhibition by Itraconazole Itraconazole 9. Amiodarone— PD Antiarrhythmic inhibition by Procainamide Amiodarone

10. Amiodarone— PK CYP induction by Rifampin Rifampin PD Additive effects on refractory 11. Amiodarone—Sotalol potential 12. Amiodarone— PK CYP3A inhibition by Verapamil 13. Amiodarone— PK CYP3A inhibition by Diltiazem PK 14. —Rifampin CYP induction by Rifampin

15. —Verapamil Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Verapamil

16. Atenolol—Diltiazem Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Diltiazem

17. Benazepril— Increased retention PD secondary to lowered aldosterone

levels

18. Benazepril— PD Additive effects of hyperkalemia Trimethoprim 19. —Verapamil Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Verapamil

20. Carvedilol—Diltiazem Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Diltiazem

21. Ciprofloxacin— PD An additive effect of risk for tendon rupture 22. Ciprofloxacin— PD Additive effects on the QT interval Procainamide 23. Ciprofloxacin—Sotalol PD Additive effects on the QT interval 24. Ciprofloxacin— Decreased clearance of Theophylline PK Theophylline, CYP1A inhibition by

Ciprofloxacin

25. Cyclosporine— PK CYP3A inhibition by Itraconazole Itraconazole 26. Cyclosporine— PK Cyclosporine metabolism induction Rifabutin by Rifabutin

Increased Cyclosporine clearance 27. Cyclosporine— PK, PD and decreased systemic Rifampin by Rifampin PK P-glycoprotein inhibition by 28. Digoxin—Dronedarone Dronedarone 29. Digoxin—Itraconazole PK Digoxin metabolism and clearance inhibition by Itraconazole 30. Enalapril— PD Increased potassium retention Spironolactone secondary to lowered aldosterone levels

31. Enalapril— PD Additive effects of hyperkalemia Trimethoprim 32. Erythromycin— PK CYP3A inhibition by Erythromycin Ketoconazole and Ketoconazole

33. Erythromycin— PK CYP3A inhibition by Erythromycin Procainamide PD 34. Erythromycin—Sotalol Additive effects on QT prolongation

35. Erythromycin— PK CYP3A inhibition by Erythromycin Verapamil 36. Erythromycin— PK CYP3A-mediated inhibition by Diltiazem Diltiazem 37. —Verapamil Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Verapamil

Additive cardiovascular effects, 38. Esmolol—Diltiazem PD, PK decreased metabolism of some beta-

blockers by Diltiazem 39. Flecainide— PD Additive effects on QT prolongation Procainamide PD Additive effects on refractory 40. Flecainide—Sotalol potential 41. Fluticasone— PK CYP3A-mediated inhibition by Itraconazole Itraconazole

42. Fluticasone— PK CYP3A-mediated inhibition by Ketoconazole Ketoconazole

43. Furosemide— PD Additive or synergistic toxicity 44. Furosemide— PD Additive or synergistic toxicity Kanamycin 45. Furosemide— PD Additive or synergistic toxicity 46. Furosemide— PD Additive or synergistic toxicity 47. Itraconazole— PK CYP3A inhibition by Itraconazole 48. Itraconazole—Rifabutin PK CYP3A induction by Rifabutin,

CYP3A inhibition by Itraconazole

PK CYP3A-mediated induction by 49. Itraconazole—Rifampin Rifampin 50. Itraconazole— PK CYP3A inhibition by Itraconazole 51. Ketoconazole— PD Additive QT-interval prolongation Procainamide 52. Ketoconazole— Rifabutin CYP3A-mediated inhibition by PK Ketoconazole, CYP3A-mediated

induction by Rifabutin

53. Ketoconazole— PK CYP3A-mediated induction by Rifampin Rifampin 54. Ketoconazole— PK CYP3A induction by Rifapentine Rifapentine PD 55. Ketoconazole—Sotalol Additive effects on the QT interval

56. — Verapamil Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Verapamil

57. Metoprolol—Diltiazem Additive cardiovascular effects, PD, PK decreased metabolism of some beta-

blockers by Diltiazem

58. Mexiletine— Theophylline PK Decreased hepatic metabolism, CYP1A inhibition by Mexiletine

59. Nifedipine— PK CYP3A induction by Phenobarbital PK 60. Nifedipine— CYP3A induction by Phenytoin

PK 61. Nifedipine—Rifabutin CYP3A induction by Rifabutin

PK 62. Nifedipine—Rifampin CYP3A induction by Rifampin

63. Nifedipine— PK CYP3A induction by Rifapentine Rifapentine PD Additive effects on refractory 64. Procainamide—Sotalol potential 65. Ramipril— Increased potassium retention Spironolactone PD secondary to lowered aldosterone

levels

66. Ramipril— PD Additive effects of hyperkalemia Trimethoprim 67. — PK CYP3A-mediated inhibition by Itraconazole Itraconazole

68. Salmeterol— PK CYP3A-mediated inhibition by Ketoconazole Ketoconazole

Additive cardiovascular effects, 69. Sotalol—Verapamil PD, PK decreased metabolism of some beta-

blockers by Verapamil Additive cardiovascular effects, 70. Sotalol—Diltiazem PD, PK decreased metabolism of some beta-

blockers by Diltiazem 71. Spironolactone— PD Additive effects of hyperkalemia Trimethoprim