Proscar

DRUG DESCRIPTION

PROSCAR (finasteride), a synthetic 4-azasteroid compound, is a specific inhibitor of steroid Type II 5?-reductase, an intracellular enzyme that converts the androgen testosterone into 5?-dihydrotestosterone (DHT).

Finasteride is 4-azaandrost-1-ene-17-carboxamide, N-(1,1-dimethylethyl)-3-oxo-,(5?,17?)-. The empirical formula of finasteride is C23H36N2O2 and its molecular weight is 372.55. Its structural formula is:

PROSCAR® (finasteride) Structural Formula Illustration

Finasteride is a white crystalline powder with a melting point near 250°C. It is freely soluble in chloroform and in lower alcohol solvents, but is practically insoluble in water.

PROSCAR (finasteride) tablets for oral administration are film-coated tablets that contain 5 mg of finasteride and the following inactive ingredients: hydrous lactose, microcrystalline cellulose, pregelatinized starch, sodium starch glycolate, hydroxypropyl cellulose LF, hydroxypropyl methylcellulose, titanium dioxide, magnesium stearate, talc, docusate sodium, FD&C Blue 2 aluminum lake and yellow iron oxide.

What are the possible side effects of finasteride (Propecia, Proscar)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.

Less serious side effects may include:

  • feeling like you might pass out;
  • swelling in your hands or feet;
  • pain in the testicles;
  • impotence, loss of interest in sex, or...

Read All Potential Side Effects and See Pictures of Proscar »

What are the precautions when taking finasteride (Proscar)?

Before taking finasteride, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, prostate cancer, infections, urinary problems.

Finasteride should not be used in children.

The drug can be absorbed through the skin. If the film coating of the tablet has been broken or the tablet crushed, it should not be handled by a woman who is pregnant or planning to become pregnant. Exposing a developing male infant to finasteride can result in abnormalities of the...

Read All Potential Precautions of Proscar »


Proscar Consumer (continued)

SIDE EFFECTS: Decreased sexual ability/desire may occur. In some men, this medication can decrease the amount of semen released during sex. This is harmless. Finasteride may also increase hair growth. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur: lump in the breast, nipple discharge, breast enlargement/tenderness/pain, pain in the testicles, inability to urinate.

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before taking finasteride, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, prostate cancer, infections, urinary problems.

Finasteride should not be used in children.

The drug can be absorbed through the skin. If the film coating of the tablet has been broken or the tablet crushed, it should not be handled by a woman who is pregnant or planning to become pregnant. Exposing a developing male infant to finasteride can result in abnormalities of the genitals.

Finasteride is not recommended for use in women and must not be used during pregnancy. If you become pregnant or think you may be pregnant, inform your doctor immediately.

This medication is not usually used in women. Therefore, it is unlikely to be used during pregnancy or breast-feeding. Consult your doctor if you have any questions about this medication.


Proscar Patient Information Including Side Effects

Brand Names: Propecia, Proscar

Generic Name: finasteride (Pronunciation: fih NAH steh ride)

  • What is finasteride (Proscar)?
  • What are the possible side effects of finasteride (Proscar)?
  • What is the most important information I should know about finasteride (Proscar)?
  • What should I discuss with my healthcare provider before taking finasteride (Proscar)?
  • How should I take finasteride (Proscar)?
  • What happens if I miss a dose (Proscar)?
  • What happens if I overdose (Proscar)?
  • What should I avoid while taking finasteride (Proscar)?
  • What other drugs will affect finasteride (Proscar)?
  • Where can I get more information?

What is finasteride (Proscar)?

Finasteride prevents the conversion of testosterone to dihydrotestosterone (DHT) in the body. DHT is involved in the development of benign prostatic hyperplasia (BPH).

Finasteride is used to treat symptoms of benign prostatic hyperplasia (BPH) in men with an enlarged prostate.

Finasteride may also be used for other purposes not listed in this medication guide.

What are the possible side effects of finasteride (Proscar)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.

Less serious side effects may include:

  • feeling like you might pass out;
  • swelling in your hands or feet;
  • pain in the testicles;
  • impotence, loss of interest in sex, or trouble having an orgasm;
  • abnormal ejaculation;
  • swelling or tenderness in your breasts;
  • dizziness, weakness;
  • headache;
  • runny nose; or
  • skin rash.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about finasteride (Proscar)?

Before taking finasteride, tell your doctor if you have ever had an allergic reaction to this medication, or to a similar medicine called dutasteride (Avodart).

Finasteride should never be taken by a woman or a child. Finasteride can be absorbed through the skin, and women or children should not be permitted to handle finasteride tablets.

Although finasteride is not for use by women, this medication can cause birth defects if a woman is exposed to it during pregnancy. Finasteride tablets should not be handled by a woman who is pregnant or who may become pregnant.

If a woman accidentally comes into contact with this medication from a broken or crushed tablet, wash the area with soap and water right away.

Call your doctor at once if you notice any breast lumps, pain, nipple discharge, or other breast changes. These may be signs of male breast cancer.

Related Drug Centers
  • Proscar
  • Propecia


Related Drugs Index: