- It is used to help hair growth in male pattern baldness. It may take 3 months to see the full effect.
- It is used to treat the signs of an enlarged prostate. It may take a few months to see the full effect.
- It may be given to you for other reasons. Talk with the doctor.
- If you have an allergy to finasteride or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you are a woman. This drug is not approved for use in women. If you are a woman using this drug, talk with your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding.
For all uses of this drug:
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
- To lower the chance of feeling dizzy or passing out, rise slowly if you have been sitting or lying down. Be careful going up and down stairs.
- This drug may affect certain lab tests. Tell all of your health care providers and lab workers that you take this drug.
- Do not donate blood while using this drug and for 1 month after stopping.
- Some doses of this drug may raise the chance of a type of prostate cancer. Talk with your doctor.
- Rarely, male breast cancer has happened with this drug. Talk with your doctor.
- This drug may lower sperm counts in men. This may affect being able to father a child. Talk with the doctor.
- This drug is not approved for use in children. Talk with the doctor.
- Pregnant women must not handle crushed or broken tablets. Talk with the doctor.
For enlarged prostate:
- Have a rectal exam (to check prostate gland) and blood work (PSA test). Talk with your doctor.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- A lump in the breast, breast soreness, or nipple discharge.
- Enlarged breasts.
- Very bad dizziness or passing out.
- Low mood (depression).
- For males, testicle pain.
- Feeling tired or weak.
- This drug may cause a change in sex ability in men or lowered interest in sex. This could go on after you stop this drug. Talk with your doctor if these effects go on or bother you.
- Take with or without food.
- Take this drug at the same time of day.
- To gain the most benefit, do not miss doses.
- Keep taking this drug as you have been told by your doctor or other health care provider, even if you feel well.
- Read the package insert for more details.
- Skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Store in the original container at room temperature.
- Protect from light.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.