What common side effect should be monitored in patients taking finasteride for BPH?

Patients taking finasteride for benign prostatic hyperplasia (BPH) should be monitored for sexual dysfunction as a common side effect. Finasteride works by inhibiting the enzyme 5-alpha-reductase, which reduces the conversion of testosterone to dihydrotestosterone (DHT). This action helps in shrinking the prostate and alleviating symptoms of BPH. However, the decrease in DHT levels can lead to sexual side effects, including erectile dysfunction, decreased libido, and reduction in ejaculatory volume.

Monitoring for these sexual side effects is important not only for patient quality of life but also because patients may be hesitant to report these issues due to embarrassment or stigma. By proactively addressing these concerns, healthcare providers can help improve adherence to the medication and overall patient satisfaction with treatment.

Other common side effects of finasteride, such as weight gain, dry mouth, and sleep disturbances, are less frequently associated with its use and do not represent the most significant or concerning issues for patients on this medication.