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Table 5 Adverse Event Summary

From: Efficacy of 1, 5, and 20 mg oral sildenafil in the treatment of adults with pulmonary arterial hypertension: a randomized, double-blind study with open-label extension

All-Cause (Treatment-Related) AEs, n

Sildenafil Dose, TID

Double-Blind Phase (Week 12)

Open-Label Phasea (Week 24)

1 mg (n = 41)

5 mg (n = 43)

20 mg (n = 45)

1 mg (n = 41)

5 mg (n = 43)

20 mg (n = 45)

Patients with AEs

17 (9)

17 (10)

19 (14)

23 (11)

22 (12)

22 (15)

 Patients with serious AEs

4 (0)

2 (0)

3 (1)

6 (0)

3 (0)

5 (2)

 Discontinuations due to AEs

1 (1)

1 (0)

3 (2)

1 (1)

1 (0)

3 (2)

Deaths

1 (0)

1 (0)

0

0

0

0

Number of AEs

46 (12)

41 (17)

47 (24)

90 (19)

69 (27)

74 (31)

AEs occurring in ≥3 patients

 Anemia

1 (0)

0 (0)

3 (1)

1 (0)

1 (0)

3 (1)

 Fatigue

2 (1)

1 (0)

0 (0)

3 (1)

1 (0)

0 (0)

 Nasopharyngitis

2 (0)

1 (0)

1 (0)

2 (0)

1 (0)

3 (0)

 Dizziness

2 (1)

1 (0)

1 (1)

3 (1)

2 (1)

2 (2)

 Dyspnea

2 (0)

3 (0)

3 (0)

2 (0)

4 (1)

3 (0)

 Headache

1 (1)

1 (1)

3 (3)

2 (2)

3 (2)

3 (3)

 Epistaxis

0 (0)

2 (2)

0 (0)

1 (0)

3 (3)

0 (0)

 Back pain

0 (0)

1 (0)

2 (1)

1 (0)

1 (0)

3 (2)

  1. AE adverse event, TID 3 times daily
  2. aIncludes AEs from the double-blind and open-label portions of the study