Table 3.

Most Common Drug-Related Adverse Events in a Controlled Comparator Trial of Dutasteride and Finasteride for Benign Prostatic Hyperplasia

Adverse Event	Finasteride (n = 817)	Dutasteride (n = 813)
Impotence	69 (8)	55 (7)
Decreased libido	46 (6	39 (5)
Ejaculation disorders	12 (1)	10 (1)
Gynecomastia	9 (1)	9 (1)
Headache	9 (1)	11 (1)
Dizziness	11 (1)	6 (<1)
Malaise/fatigue	12 (1)	12 (1)

Data are presented as n (%). Adverse events reported in ≥ 1% of patients in either group are listed. There were no statistically significant differences between dutasteride- and finasteride-treated patients.

Reproduced with permission from Andriole et al.¹⁸