Studies show varying rates of sexual side effects associated with finasteride, largely depending on the study design and population. One meta-analysis of 21 studies involving over 7,000 men found erectile dysfunction reported in 2.7% of those taking finasteride compared to 0.6% in the placebo group. Another study, looking specifically at a larger population taking finasteride for benign prostatic hyperplasia, observed a 4.3% incidence of erectile dysfunction.
Reports of decreased libido are also prevalent. A systematic review and meta-analysis of 29 trials involving approximately 11,000 participants indicated a 2.4% rate of decreased libido in the finasteride group versus 0.7% in the placebo group. The significance of this difference varies across studies, emphasizing the need for individual consideration.
Ejaculation disorders, such as decreased ejaculate volume or difficulty ejaculating, have also been reported. Data on the prevalence of these specific issues is less consistent across studies. Many studies lack the specificity or sufficient sample sizes to provide definitive conclusions on the prevalence of these side effects.
It’s crucial to note these statistics represent averages. Individual responses to finasteride vary greatly. Some men experience no sexual side effects, while others may encounter significant issues. Open communication with your doctor is vital if you experience any concerning changes.
Further research is needed to fully understand the exact prevalence and risk factors associated with these sexual side effects, including long-term effects. Always discuss the potential risks and benefits of finasteride with your healthcare provider before starting treatment.
