Propecia (finasteride) contraindications and warnings


The following is information on contraindications to the use of finasteride in general, pregnancy, breastfeeding and children. Please note that the contraindications may vary depending on the dosage form of a drug (eg tablet, syringe, ointment).

When should finasteride not be used?

The active substance should not be used in case of hypersensitivity to finasteride, women, children and patients with impaired hepatic function.

Treatment of benign enlargement of the prostate with finasteride should be done in consultation with a urology doctor. The possibility of a malignant change (tumor) of the prostate tissue (prostate carcinoma) should be excluded before the start of treatment by the doctor, as finasteride influences an important laboratory value for the detection of prostate cancer.

Patients who have a large amount of urine remaining in the bladder after urination (large residual urine volume) and / or who have a greatly reduced urinary flow must be carefully monitored by the physician during therapy with finasteride.

What should you watch out for during pregnancy and lactation?

The use of finasteride in women is prohibited. Especially in pregnancy and lactation, the active ingredient can interfere with the hormonal balance of the body. So there is a risk that malformations of the external genitals in the male unborn child may arise.

Crushed or broken tablets containing finasteride should not be affected by women who are pregnant or could become pregnant because of the possibility of finasteride in the body and the potential risk to a male child / p>

What should be considered in children?

The active substance should not be used in children.

Warnings and Precautions

  • Patients with residual urine formation and / or greatly reduced urinary flow should be monitored by a doctor.
  • Before and during treatment, screening for prostate cancer should be performed by the doctor.
  • During treatment with the drug regular check-ups by the attending physician must take place.
  • All breast changes that occur during a finasteride treatment should be reported to the treating physician as these may be signs of breast cancer.
  • Treatment with the drug can lower the prostate-specific antigen (PSA) in the blood, making its value in the early detection of prostate cancer questionable.

Sometimes medications release allergic reactions.
If you notice any signs of allergic reaction, tell your doctor or pharmacist immediately.