Precautions and Warnings With Finasteride

Warnings and Precautions With Finasteride 5 Mg

Some precautions and warnings to be aware of with finasteride 5 mg include:
  • Before you start finasteride, your healthcare provider should make sure your enlarged prostate symptoms are not caused by another condition, such as prostate cancer or bladder problems.
  • Men with severely decreased urine flow or men who can only empty very little of their bladder at a time should be closely monitored by their healthcare providers. For these men, finasteride may not be the best option.
  • Finasteride does not prevent prostate cancer. Men can have both BPH and prostate cancer at the same time.
  • Finasteride can lower your PSA levels. The PSA (prostate specific antigen) blood test is a common way to screen for prostate cancer (see Prostate Cancer Screening). Your healthcare provider will need to adjust your PSA test result (by doubling it) if you are taking finasteride. Your healthcare provider can also use a slightly different blood test (the "percent free PSA" test) that does not need to be adjusted. Any increase in PSA while taking finasteride (even if still within the normal range) should be further evaluated, as this may be a possible sign of prostate cancer.
  • Studies have shown that finasteride may increase the risk of a serious type of prostate cancer. You should discuss this risk with your healthcare provider, especially if you have a family history of prostate cancer. Interestingly, finasteride appears to decrease the risk of less serious prostate cancers.
  • Finasteride can cause sexual side effects, including decreased libido (sex drive), erectile dysfunction (ED or impotence), and decreased ejaculation amount. Usually, decreased ejaculation amount does not interfere with sexual function (see Proscar Sexual Side Effects for more information).
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